Need some help, I'm converting my 86 gt to mass air. found a guy selling a cobra mass air system. I wanted to know can i use the cobra mass air system on a currently
stock motor , will i need anything else to make it work.?
Do you mean he's selling the computer, injectors, and MAF sensor? If he is you'll need the conversion wiring harness (Pro-Flow makes a good one, sells for around fifty bucks) and some way of mounting the MAF sensor, best thing to et would be a cold-air kit from BBk or MAC.
Otherwise the car will run fine with your stock engine. The 24's are a little big for a stock engine, but that's not a big deal if you buy an adjustable fuel pressure regulator and lean it out a little at idle.