alright ive got a horribly tuned 650 edelbrock (too rich) which is on the motor now. i also have a holley 600 and my stock Q-jet. which one would you put on the motor for now until i can have the edelbrock tuned and set up properly? its a 350 (gm 290hp) with a edelbrock performer intake, hopefully by next week itll have long tube hookers too . the edelbrock already has the offroad needle and seats, and i have the asorted step up springs for it. and does a carb spacer actaully make a diff in seat of your pants driving?