I picked up a set of xi trailing arms Friday in anticipation of doing this swap and got to wondering if I should bother with the intermediary step of using 330i calipers and rotors or if I should go straight to where I'll ultimately end up, which is the 996 calipers on Rally Road brackets and CSL rotors. In researching that I noticed that Rally Road suggests using E38 750i rear rotors as that gets you the 327x20 rotor size, but retains the 325i's 6-1/2" parking brake drum. Does anybody have any input to further confirm this? I was kind of surprised that I hadn't seen this as an option anywhere else.
I'm still going to use the xi RTAs that I got as it will be much easier to clean them up and have them rebuilt and ready to go when it comes time to do my swap, but I thought that it might deserve mention in this already great thread.