How much difference is there between these 2 intakes if any? I'm doing a head swap with stage 3 comp cams and with the increase in redline can a 01 Cobra intake handle the higher breathing? I have a 01 Cobra intake so I would need to port it?
The lower intakes are virtually identical between the 01 Cobra and 03/04 Mach 1. The only ones you have to stay away from are the 99 Cobra lowers.
There are only subtle difference between the Cobra and Mach upper plenums. The differences are negligible. They will not limit you in any way.
Depends on who you ask. Whats are your plans for the car?