HI sawking I use Holleys not to complecated and easy to work on currently have 4150 pro series 750 double pumper it's fine to use to get my car running but to small for my cam and MODS I have donefor 1/4 and 1/8th mile.had this carb on 10.00sec nova and at around the 3000 foot mark the car would stop pullin with same cam,found out that when go with a big cam like this engine do's not make enough Vacume to operate vacume secondarys properly so when car is ready for test and tune it will get a Holley 4500 series 1050 or1150 if I change to BRODEX heads.