I was worried about working on this but after changung the intake gasket it seems maybe i worry to much and this wouldnt be so bad to add mods, I jhave K&N fikter and thats it what would be easist mods to show some sort of gains, on a 94 z28, 80,000 miles auto.

 

you're going to hate hearing this, but I would have done a cam while I was there