I have a 1986 Pontiac Firebird Trans Am. My factory 305 spun a bearing so I decided to reuse my fatory TPI system on a 358 (350 bored .040 over), but I usually do this stuff with my dad and he knows nothing about tuning EFI so this is new grounds for both of us. I'm using a $6E setup originally ballparked by Tuned Performance on the thirdgen forums. If there's anything that someone wants to let me know or offer any support about fuel trims and spark tables, don't hesitate to reach out. Lord knows I could use the help.