Engine Swaps, 3.8 Gtp,4.3 Vortec

Hey i was wondering if anyone has done any of these swaps. I was thinkin of maybe doing a GTP 3.8 litre in my car, then changing the pulleys and all that good stuff for the supercharger. Also the 4.3 litre Vortec, dont know if its been done or even considered, but i would like to hear some advice or input, and spare the " do u know how much its gonna cost" , i dont care. Thanks

[Pimpalero03]

most people just put a 5.7 LS1 in it. its easier.

Any of the 90-degree motors are a very tight fit.
Not easy or cheap by any stretch, so I doubt you'll find more than 1 or 2 cats outside of GM who've tried.
Also, do you really want to add more weight in the front of an already-nose-heavy car? Especially the L67/L32 3.8 and 4.3 motors, since they have iron blocks and heads.

[mike2002]

no, it cant be done. you'll get some people that will come on and say "yes it can, you just need to know what your doing" or "its been done before" well someone tried with a gagt, which is mechanically the same car. after 10's of thousands of dollars it still doesn't run right.

buy a faster car