Alright I need some input. I just totaled my 03 GT V6... Looking at an 04 replacement.

I just totaled my baby... R.I.P. Sassy Bitch Sheila. But I'm looking at an 04 replacement. The issue though is it's only a DOHC 16V 4 cylinder. I want to drop the 3.3L V6 in there. Worth it or no? If so, what all do I have to swap out? Also, what price am I looking at for changing all that out.

All input is appreciated!