[Paul Huryk]

While i haven't had a 305 TPI, I did have an LG4 car, which is a similar engine with a ccc quadrajet.

You want to open up the exhaust (headers, new 3" cat, cat back); reduce parasitic power loss with underdrive pulleys, optimize tuning (PROM), get the intake air in cool and unrestricted, and make sure your trans and rear end are up to snuff.

I would suggest nitrous, but it will kill your trans with all the extra TQ - unless it has already been built. A good buddy went from 14.3 to 13.0 with a 100 shot on a 1989 IROC L98. The car ran 1.69 short times with only Nitto drag radials and no suspension work! Definitely the hardest launching street car I was ever in.