i have a 91.5 cummins that i want to build for a street truck. i have a fass fuel system 18psi, hx35 , 366 spring, denny t fuel pin. Im fixing to order 14mm head, 60lbs valve springs, arps. i plan on fire ringing the head a little porting and running an hx35/ ht3b. What do yall think?

 

If your 35 has the factory 12cm Ex. housing you'll probably want to find a 14cm. The 3b is kind of old school. IMO you'd be better off finding a an hx60 or s400.