t/b?

[black90lx]

what size throttle body should i go with on my combo a 70mm or a 75mm? i still have the stock throttle body and it is killing it.. and i will probably be putting nitrous on it..

mac fenderwell cold air kit....
chrome bullet 75mm mass air meter(30lb inj)....
fms red top 30lb injectors....
holly systemax 2 intake with 1 inch spacer ....
trickflow twisted wedge heads been milled for more compression....
trickflow stage 1 cam....
flowtech equal length shorty headers....
2.5 h pipe with 2 magna flow high flow cats( for emmisions a few years back)....
flowmasters opened up to 3 inch out the back....

[extreme281]

You wont see any difference between the 70 and 75 unless you have ported heads.