Can anyone tell me if I can put a Mits V6 easily into my 94 Galant?

no.

and if your looking for help on engine swaps, there are a bunch of people doing swaps on galants at www.mitsutalk.com
i personally i would do the 4g63t evo swap.
ask peanotation at that site^...he's a moderator there, and hes almost done with his swap.

anything is possible, feasable and possible are two very very different things, with enough time and money you ould put a 454 into a civic, but there wil be obstacles my freind, it can be done, and the tt 6 cylinder, in a 94, god damn! ,but you might as well go buy a skyline.