Well, back to the original question: Nice FG Speester replica or an original Coupe? That is very gnarly. I owned two orginal coupes many years ago, and I am about to own a very nice FG Speedster. Of course, one can own a very nice FG Coupe for not too much $$ too, thanks to JPS Motorsports, but we'll leave that aside for now. To me it is first about style: both are classics in their own right. One might be more water-tight than the other, and that may be a big consideration, I dunno. Quickly comes the practicality of owning the thing. To me, an old orignial Coupe presents a host of problems wrt up-keep and maintenance, not the least of which will be the old rust bug-a-boo. That last one is why I still do not have my orginal coupes -- basically, they rusted away as I had not the means to rebuild them, and then let the process start anew. If none of these things bothers you: rust potential, expensive parts, old fashioned engineering, then go ahead and jump into an old original, and feel very special in a very special car. It will give you plenty to fuss with making it or keeping it looking good. If you want the look and the advantage of modern running gear, and would just as soon not have the car rust out on you, the FG versions would seem to make a lot of sense. Maybe it never rains/snows on your particualr mountain in NC -?- Or just save it for sunny days -- that would work.
The new JPS FG Coupe replicar comes w/ A/C and electric windows, if that is important.