im in the process of build a complete custom intake manifold, the one that i have designed has a 1300 cc surge tank, is this too large, i was planning on using the stock throttle body so that kinda locked some of the dim. i had to work with. is there really a big advantage to using like a mustang throttle body, also i was planning 1.5 dia. runner are these too large??

 

as far as the mat. i plan on using 18 ga. s.s. and s.s. runners. i would fab the whole thing out of alum. but i have only been tig welding for about 2 years and i am not confident enough in my alum welding skills. he runners will be mandrel bend due to the fact that i also run a unison breeze cnc mandrel bending machine. it also helps that i work as a machinist/mechanic for a living.