will this combo work? i have the rb crossmember, but no rb mounts. the KA mounts look like they bolt in the same. anybody know if theres a size diff?

 

hey i don't think that'll work... i know the ka mounts are fine for bolting up for an sr20, or ca18, but i don't think it'll be the right fit for the rb.. i would just get rb mounts anyways.

btw where in PA are you located?