I'm looking to get my diff overhauled and want to ask what the best diff ratio is for a 308 coupled to a M21 gearbox on standard 14" wheels?
My ID plate states states GV4 which is 3.36:1
Currently my ute has a 3.55:1 open wheeler but I have a 3.08:1 LSD at home in the shed. I want something that is nice to drive and not rev its head off at 100kms (like the 3.55).

Any one have any thoughts on this?