Originally Posted by Carter Flotron

" The idea is that the .3 diffs have been designed to be freer than the .2 diffs, so in order to get the same feel from your diffs when switching to the newer car you'd go up 2k on diff oils. "

Thanks for your recent posts. Great information.

I have a question on the difference between the .2 and .3 diffs.

By looking at the part numbers the only difference I see is the diff shim TKR5145 changed to TKR5145B in the .3. Do you know if there were other running changes without a part number change?

The reason I ask is that I am building a .3 for next season and have a few back up .2 diffs that I would like to set up with different weight oils for easy set changes but want to make sure the diffs are the same (except for oil weight) for consistency.

Thanks