i have a 1969 camaro rs convertible, i am putting in a 5.7 ltr from a latemodel truck i have an edelbrock 600cfm carb and i haveto buy the edelbrock manifold to use with the vortech heads, i also have to get an electric fuel pump (due to there is no place for the mechanicle fuelpump on the late of a block) i want a rough idle cam but not too extreme, i want to keep the rest of the engine strock if possible i dont have too much money to put into it. can anybody let me know what duration or lift i should be looking at to get that rough idle, or if you have an exact cam i should buy please let me know thank you...