What's the difference in the flange for the lower to middle manifold between the 4 and 6 port?

Thanks,

Matt

 

hole size, bolt pattern

 

Sounds good, thanks for the reply!

 

Plus they just won't physically fit. The plenum on the TII (4 port) upper intake will hit the engine block.

 

Thanks!

 

by a long shot i might add! lol

we're talking like 6" shorter on the n/a intake.. the n/a has a third addition to the party, the mid-manifold, which reverses everything. ports off the mid-manifold are oblong and nowhere near a way to adapt.