U13 sr20det bore size and ring size?
I have been looking for the bore and ring size for the u13 sr20det all I find I that the bore is 87mm, 86mm, and 86.5. I believe that it's 87mm but they say the ring size is 86 or 86.5. Reason I am asking is because I going to buy my new rings but I don't know what size to get. Someone told me 86.5 but yea don't know if anyone knows please let me know.