Is it possible to swap a V8 into a truck with a 4.2L V6?

Will it work without tons of modifications/what kind of mods would you need to do? Such as electrical, tranny, engine mounts, etc etc...assuming it can fit in the first place?

Thanks.

 

Yes, it will physically fit.

No, it can't be done without tons of other modifications.

 

Thats what I needed to know, thanks