Was the TPI 350 available in 92 or just the TBI? ANy documentation on this?

 

To answer your questions in sequense: no and sort of by reverse engineering

If you go to www.9c1.com you will find the police package brochure for the 92. Since the cop cars got the best motor options, some of which were not available to John Q Public, you will see for 92 the 350 option was the lowly 205hp tbi L05 option. Apparently not available in civvie cars if you read the note ** at the 5.7 litre option, but available to anyone if they bought a 92 Buick Roadmonster, pick-up truck, etc. I have a 91 with 305, and i must say they are pretty gutless.