davered00ss

iTrader: (4)

I know you can change the 78 upper intake to a 90mm upper intake.

My question is, are the lower & middle intakes the same on both, or different & the upper just fits on the other parts as well?

Kingc8r

iTrader: (21)

Interested as well but I don't think you can buy Fast 90 products anymore since they've been discontinued

LS184

iTrader: (7)

wht? yes u can buy fast products !

davered00ss

iTrader: (4)

The 90 has been discontinued, not FAST products.

radkon

iTrader: (2)

The 78 and 90 parts are interchangable, the only difference is the top shell (with TB opening), not sure about the "new" 92. I know because I've done it.

davered00ss

iTrader: (4)

What do I need for new gaskets to do the swap?

Just the TB gasket or is there a top shell gasket?

ICRAZY6

iTrader: (68)

There is a gasket between the shells. As long as you don't damage it your good. The new upper shell should come with the TB gasket.

99zman

iTrader: (23)

and some black RTV..

GGTTOO

iTrader: (2)

I just purchased a 90MM top on Ebay and installed the setup lst weekend. keep checking they have them from time to time. I only payed 120.00 for the top portion. It had the EVAP fitting busted off but other than that it was like brand new. I repaired it and actually with the new brass fitting it fits better on the car.

Do not take the bottom two sections apart and you will be fine in replacing the top.