Ok 2 questions. 1: I blew the 1st VG30E in my 91 maxima. I had to replace it with a 94 VG30E, and it seems a lot faster. Was there any difference in the HP output?
2: Any good/cheap mods? Forced Induction (preferably supercharger, I hear swapping a turbo is a pain)

 

no difference in hp from 89-94 for the VG, maybe your first motor just sucked

cheap/good mods: CAI, Y pipe, etc - check out the FAQs

 

FAQ's are a good place to start for sure