I'm not sure whether to use 3.73s or 4.10s with my new setup. Craig at GTP is suggesting 4.10s with his setup in my car, however I'm worried about running out of gear at the track and having to go to 5th. I'm pretty sure with 3.73s I won't have that problem. What do you guys think? Thanks in advance.

 

No you wont run out of gear with 4:10s. Heck there are guys on here with 4:33s that aren't running out of gear with a M6. Just kick the revv limiter a little higher.

 

I take mine all the way to 6500 RPM and never have to shift into 5th Like hsyr just bump your rev limiter a little and then see what she does. I love the 4.10 it is awesome.