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On3 TT Kit


Team, swapping out the worn out 2v for a teksid 4v from a 98 cobra in an 88 modfox.

Building the motor for boost and looking at the 96-98 4v kit from On3performance.

Has anyone used this kit in their modfox? I would rather go this route and upgrade the turbo eventually then go from there. Not looking to do a ton of fab work. Let me know


Well-Known Member
Staff member
I have not used it on a modfox, but have helped install one on a 99 GT. we used the forward facing single turbo kit. While there were some minor fit and finish issues, it cleared the Maximum Motorsports Kmember just fine. While the 4valve is very different alignment wise, I would expect that the kit would clear. Have you reached out to them to discuss?