Find a engine..
 

Im trying to find a grand national gnx engine for my fiero.... an one got any sources to the engines...

3.8L V6 Turbo 276 bhp @ 4400 rpm, 360 ft-lb @ 3000 rpm.

Try REDSTTYPE, he's a Buick nut. You can get an engine from Jasper. If you want to find a used engine, try looking around at www.turbobuick.com

Does it need to be a GNX engine? A normal GN and GNX have the same engine internals.

Doesn't really make sense to pay for the GNX motor (assuming you can even find it) when you're probably going to get rid of most of the stuff that makes it different from the normal GN.

Here's the differences: http://home.att.net/~buickGNX/GNX/engine.htm