Hey guys I was wondering if anyone has came up with a larger differential that lowers the cars rpm for highway or switched a auto rear differential into a manual 6 speed coupe ?? Trying to maximize top end and lower engines speeds on highway is my goal

 

I read about something called the rear pumpkin swap. But it's very heavily involved. If you do this it will neuter your performance...

 

Search it, there is a lot of info on it..

 

Lowest geared OEM diff I know of is 3.3, which you may already have.

 

Well this is a 04 coupe performance package meaning brembo and such and every little bit counts but I have been searching but the app makes it difficult for me to search