I just recently bought an 87 IROC Z 5.7 Liter. I have yet to get it running to my satisfaction. I just recently put a new mass air flow sensor on it along with a new burn off relay. I did this due to the car seemingly not taking fuel correctly. The car is still stalling out for a second when you first hit the gas pedal. Also, is there something I can do to make the car quicker with out putting a lot of money into it? I have already put $1200.00 in it.