86 V6 to 89 5.0 Questions

I recently found a really good deal on a 86 Stang but the only problem is it has a V6 and i was wondering what is involved in swapping in a 89-91 5.0 engine, i have heard it is easy to swap engines in the fox mustangs but is there anything different in swapping in a engine with the different Air Metering system? Anyone from Cali. know about the legalities of doing this swap for smog? Any info is helpfull


Steven


PS What kinda mods would be required to get a stang into the Mid-Low 13's with the 5.0 engine?