I currently have a 87 firebird i purchased this summer.It has a certified 8.9 cage,backhalved 4 link.Car ran 9'45s with a 700hp bbc.Well i have decided to either slow it down or sell for something slower.Looking for a consistent bracket car.By slowing it down this would leave me with the option of going faster if I wanted too later.I have a throttle stop (paid $500 for it, a very nice piece), would that alone slow it down without dramatically effecting the convertor. I know this sounds crazy to most, but it is what I want to do. Hopeing to improve the safety of the car and still have fun.