hey need some help deciding on the corect size carb for my galaxie anybody have any tips its a 61 352fe with new .030 over speed pros hi flow heads stock manafolds 21/2 exhaust bigger cam dont no the specs would be like and rv cam msd 6a box and ignition edelbrock performer intake. i have a 1406 600cfm now should i change it or would this be what i want if you need more info let me no thanks.