i have a 351C in a 1972 mustang it sounds like it keeps missing, backfiring and no throtle response. but i fixed the cap, rotor, and spark plugs, now what? i also want to find some cheap ways to add hp and torque to it. i no i can get aussie heads but should i get 4v or 2v and why? what cam goes with it, and were can i get it? what manifold and were? i know summit has alot, but which ones. i need help but in a easy perspective for me to understand. i only have about a $1000 or so. so i have to keep it kind of cheap. how do you fix the common oil system problem in it? wat is the best thing to do with that amount of $ and what should i do if i add a blower later? i need to no what parts specifically like which cam in summit, or which manifold? is a crank shaft or pistons a good idea? can u please leave email to discuss better!! oh also when a manifold in summit says one rpm to another rpm range, it dont make since because wouldnt u want the edlebrock big y manifold before xcelorator one?