Quote: The 4:10s would probably be a little higher RPM than I would feel comfortable with. I think I'm going to put the lower gear set in my spare 904 and get a better converter. Then if I need more gear than the 3:23 set I might swap to the 3.55. The overdrive would be nice but I don't feel like fabricating a mount and all the other issues with fitting everything in the car. I wold rather rebuild the spare 904 and install the gear set then just slip everything in place. Easy peasy and no headache. I'm tired of headaches...
If you have the "Right" converter then the "wrong" rear gear is not as big deal unless you are chasing the last tenth.
One of the mags did a comparison years ago between an optimized engine and converter package and rear gears from IIRC 2.76 to at least 4.10.
There was only a tenth or two between them all and they all MPH'd within a couple also.
