true. i really cant believe that NASCAR is still using the 1st gen carb'd smallblocks for engines. i really thought they would have kept up with technology and upgraded engine platforms by now. i mean gm production cars are now on a 4thgen small block, while nascar is still using a 1st gen. but if they did that and each manufacturer had to use their own brand of engine, ford would be screwed, and possibly toyota, because the GM LSx is waaayyy better than the ford mod engines and anykind of v8 toyota could make up. and the dodge new hemi engines are starting to get enough aftermarket support to run with GM.
another problem is though that there would be TONS of restrictions on the turbo, because they can be tuned almost indefinetely.