Dennis,
Swapping ends while driving can happen with your current engine. I'm assuming you have IRS which is much more stable than a swing axle, so driving and throttle technique will be just as important as they are now. If you do have IRS then you're 2 steps ahead of the swing axle crowd that get's to experience the dreaded positive camber transition that will ultimately cause the back of the car to be the front and vice versa.
In other words and the short version, regardless of the engine, everything falls back on how your drive your car.
So, back to your engine question. I've probably built over 50 different 2110 cc engines. Personally I love them, especially the version that incorporates an 82mm stroke crank shaft
(there are 2 versions of a 2110, the first and most common is 82mm crank x 90.5mm pistons, the 2nd and rather unique version has a 76mm crank x 94 mm pistons)
The first version with the 82 mm crank creates a lot of torque due to the long stroke. It's a great power house and with thick 90.5 cylinders, it has a nice longevity record. This version produces great torque and helps with those sudden bursts of speed needed to enter freeway on ramps or overtaking and passing another vehicle.
The second over square engine has 94mm piston with a shorter stroke 76mm crank. It's more of a high revving engine and in a light car it can really give the sensation of flying but may require more gear changes. You'll probably not recognize that you're making more gear changes unless you had 2 exact 2110cc equipped speedsters sitting side by side wherein one had an 82 mm crank and the other had the 76mm crank. If this were the case, and you put both engines through an exact same course, you'd see that the 82 mm crank version definitely had more torque.
Horsepower is just a number derived from torque but to make it simple, both engine could easily produce 150 HP but the version with the 82 mm crank will make that power sooner, or at a lower RPM range and the version with the 76 crank will probably make the power higher up in the RPM range. Thus, the 82 mm version may be easier to drive during daily commutes or for just pleasure driving.
Remember, building such an engine requires much more than just pistons and crank shafts. Consider your selection of cylinder heads, rods, cam, carbs, a full flow system etc etc etc.
Also, remember, anytime you exceed the stock VW engine displacement, you create HEAT so plan wisely to control the engine/oil heat before you decide to build an engine.
by the way, age is just a number, I'm 60 going on 41