about the carb. i ended up runing the Edelbrocks, because on a hot day the gas in the holly would boil over from the blower heat and with the Edelbrocks i didnt have that problem. i ran holly, Edelbrocks and predators. the predators did better at the drag strip. i used the 6-71, didnt see no need for a 8-71 on the st. had more power than i needed anyway. what ever you do just keep it simple and you'll have more fun.