Originally posted by wk217:
Ok... I was also looking at the KN RC-4630

K&N RC-4630 (RU-3530)
Mounting Dia = 3 1/2" (3 3/4")
Filter Base = 5 1/2" (5 3/8")
Filter Top = 4 1/2" (4 3/8")
Filter Length = 6 1/2" (7")
Flange = 1 1/4" (5/8")



It is definitely a decent choice and the extra flange area would make mounting the IAT much easier.

RU-3530 is 5.375x4.375x7 = ~645cfm Effective area

RC-4630 is 5.5x4.5x6.5 = ~615cfm Effective area


BTW - Optimum size for a NA 2.5L is 600-650cfm Effective area.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.