Question on 99/01 + 03/04 Lowers

[fire]

I'm thinking about doing an eaton swap on my 96 cobra, i've read that for the 03/04 lower intake to clear you need to grind the ribs on the block a little bit.. do you guys know if an 99/01 lower intake will fit the teksid block without grinding??

 

[CobraKalas]

most 99's came stock with a teksid block so yes the intake will fit, however i believe you need an 03/04 lower intake for the eaton to fit. also, you grind off the knock sensors, not the ribs

 

[99riocobra]

there seems to be some misconception in this thread. the 03/04 lower will not mate up with the 96-98 cobra heads. 99 or newer 4 valve heads are required. and yes, grinding on the block is required for the 03/04 lower to clear. the 99/01 intake will of course be fine with that block, but once again it's the heads that won't work with it. just to let you know, the eaton REQUIRES the 03/04 lower intake. you will have no use for the 99/01 lower when doing an eaton setup.

 

[fire]

oh ok I could of sworn I read in a thread that you could use a 99/01 lower with an eaton with some modification... im asking because I just bought 99 heads

 

[99riocobra]

ph, i see. well, the 99 heads are a step in the right direction. but you won't be using the 99/01 lower....