My first post but everyone has to start somewhere so take what I say with a grain of salt if you must. I apologize in advance for the long winded post but I've heard that I am sometimes windier than a sack full of buttholes....
My wife and I have owned our CMC wide body Speedster for 10 years now and while it has been a work in progress for the majority of the time we have owned it, the best thing I ever did was install fuel injection.
The engine that came with the car was a stock 1600 that was okay for in-town driving but was no fun driving up to the mountains in. I added 1.25:1 rockers and a better exhaust and gained a few hp but still felt that I could row a boat faster than the car accelerated. Knowing I needed to get more air moving through the engine I decided to ditch the tiny single carb and go with a dual carb setup. I found a used set of DRLA40's and mounted them to my little engine. After getting a decent tune on them, I did feel a bit more power and drove the car like this for about 2 years and which time I decided I needed more power.
My next move was to purchase a used (but recently rebuilt) 2276 online. After installing the engine and breaking it in (supposedly had new cam and lifters), I took it out for it's maiden voyage. I made it about 2 miles and started hearing a strange noise from the engine so I shut it off and towed it home. I drained the oil and it didn't look good so I removed the drain plate and out came bits and pieces of metal - good size chunks of metal. I called the guy I bought it from and he was no help whatsoever. After being as mad as a midget with a yoyo for a couple of days, I decided to split the case to see what happened and found that 2 of the lifters had lost their heads. After examining the case, I found a crack that could not be repaired and decided to pick up one of the aluminum super cases. I built the current engine myself with good components and drove it for another couple more years with the DRLA40's.
Needing more power I decided to turbocharge the engine. I went with a kit from a company out of California that came with just about everything needed to add the turbo including a single Holley carb. I managed to get everything installed and it ran like mad and I was as happy as a kid in a candy store for about 6 months and the main reason that I decided to change to fuel injection was because I got tired of adjusting the carb and distributor every time I wanted to increase boost as every time I did, the car would either run great and not idle for poop or would idle great and not run the way I wanted it to. I decided it was time to give fuel injection a try so I sold off all of the parts from the California company except for the header and started picking up the pieces for fuel injection which I was able to get 99% of from TheDubShop.
The fuel injection I am currently running is controlled by a Megasquirt controller and after a week or so long learning curve, is simple to tune and make adjustments to. At the same time, I also decided to ditch the distributor and use the ignition function that the Megasquirt controller has. I have a trigger wheel on the back-side of the crank pulley and a sensor mounted to the case that provides rock solid ignition. The fuel injection end castings are from CB performance and I built my own intake that connects them to the turbocharger. I've been running this setup for 2.5 years now and couldn't be happier. The engine starts right up, idles like it's supposed to and outruns just about everything on the street. I currently run 15psi boost through this engine and it never misses a lick. I drive it daily - weather permitting and it gets a consistent 25mpg in town and that's with my foot in it most of the time.
With the engine sorted out just the way I wanted it, I was able to spend time on the rest of the car and stripped it down and repainted it, replaced the carpet and top, added some badges, molding and mirrors and really do nothing now but enjoy it.
Again I apologize for a long winded first post but to the original poster; my suggestion to you would be to buy from a reputable vendor that will stand behind their product. The engine could be a good deal but you really never know what you're getting and could end up with an expensive paper weight.
I am not trying to promote any of the products or shops that I mentioned. I'm only stating what I am running and where it came from and know that there are many other reputable companies with goodies for our rides.