how easy is it to replace a 2.8 out of a 5speed 86 firebird with a 3.8 out of a

[birdman23]

96 firebird? ?
i wrecked my 3.8 firebird but the engine and everything is still good it has a 5 speed trans
and i was looking at getting a 86 firebird with a 2.8 and wanted to swap it my self how difficult would it be to just pull everything out and replace it with the 3.8

 

[Goatman]

The 2.8 is a chevrolet based engine and the 3.8 is a buick based engine, totally different set up..
I suppose it could be done but the entire fuel and electornics systems are all integrated into the car and would have to be redone ... usually NOT a good choice when doing it your self...