Posted By motoring on 06 Dec 2013 10:47 PM
Posted By Brigdh on 06 Dec 2013 09:33 PM
Did you miss the SP rule that allows you to run any diff? I'm not understanding why you are trying to justify a diff swap through update/backdate when there is an explicit allowance.....
Gear ratio's are not free, so that is probably why he is asking about update backdate...
the answer is yes, you can swap diffs from other years/models on the same line.
If the motivation for the question is to change the gear ratio, then that's not a diff swap, that's a ring and pinion swap and should be specified as such. Asking accurate questions is how one gets accurate answers.
So, to be pedantic - diff swaps are allowed because of the explicit allowance. Ring and pinion swaps are allowed between vehicles listed on the same line due to update/backdate.