Hey guys i have a gsr block with type r pistons a full port n polish head skunk 2 high compression valvetrain and skunk 2 pro series intake manifold i was wondering what size throttle body i should get should i go with the 70 mm skunk2 tb or down some???? i can also port the im to 70mm ive found out

 

if you have big cams then go for it.
if not, i'd say got 66mm-68mm

 

70mm is typical for forced induction

i would say smaller....stock itr is 65mm i believe

 

im a actually gonna get the skunk2 cams soon prob the pro 2

 

anything bigger than your IM port will be a waste