Hey everyone I want to increase the HP from 230HP to hopefully 275 HP on my 87 GTA without having to bring it to a machine shop it came factory with the L98 engine I wanted to start at the air filter but it seems there is no system for this year would also like an opinion on the following exhaust Borla Catback or Magnaflow catback, headers should I purchase them with the A.I.R or just simply remove the A.I.R and finally a mod chip any recommendations.

 

Headers, 3" direct-fit cat, 3" cat-back of your choice, cam. You can get there.