So I threw my dad's edelbrock 750 on it.. holy crap. Huge difference. I made sure the car was straight and stomped on it at about 10mph. Broke both back tires free and I had to back off to get them to stop going into third gear. Trying to sell my 600 now and get a 750 for myself. Car has all kinds of revealed power now. I read the comment about trying to stay with the smallest carb for the application, this one didnt lose any bottom end power. The front end doesnt drop until you let off the gas now.