[L78toLT1]

Originally Posted by JSH

You don't show us your car's power level, but Kooks green cats, which I have, should work for you, by looking at your mods.

On a separate topic, and looking at your chassis mods, do you have any suggestions on basic chassis mods that would help to get my car down the strip a bit quicker?

I have not dynoed my car, but based on several identical builds by Ted Jannetty, I should be around 730whp on e60. I'm certain that standard green cats would last forever on the street, but they're not good for road course sessions on high speed tracks. If no cats are available that will hold up to track use, I will just run catless on the track, and swap on catted connection pipes for street duty. It would be nice not to have to deal with swapping back and forth, but there may be no other option.

I haven't done a lot of drag racing, but I would recommend the ZLE rear cradle bushings regardless of how the car is used. The rear end just seems much more planted. Your ZL1 already has equivalent springs and swaybars to what I have.