Will a 2004 3.8L fit in a 2000 3.8L car?

[leafman13]

I got a 2000 Grandprix with a 3.8L normally aspirated engine and it over heated. I found a 2004 3.8L Normally aspirated engine with 40,000 km.
I want to know if it will fit. I have been told that the 2 are different, but what is different, maybe i can change over some parts.
Any tips would help

[blueguy]

Just swap the bottom ends...everything else will transfer over. I do suggest getting a 180* Thermostat and getting rid of the dexcool while it is out and replace it with the cheap green or yellow sh1t...then yank out your radiator and clean it out.

[leafman13]

when you say swop the bottom ends do you mean the blocks?
i do not want to seperate the heads on either motors

[blueguy]

Heads/Bottom end (block) whatever...as long as it has the injector bosses in the lower intake manifold and not in the heads like the supercharged cars then your good. EVERYTHING will swap over.