Some of you have participated in the earlier thread discussing a drop spindle for our Mustangs. I have bought a couple of pair of D0 drum spindles and am ready to start the evaluation and design. I want some input on a few issues. For that person(s) who will inevitably post about your distain for the fact that I need to ask these things, I never claimed a performance inclination, just the ability to make this project happen, so don't bother. There are two areas that I want clarified. 1. How much drop is needed (or wanted)? How much is too much (will create interference at the lower control arm)? 2. I intend to preform a second tie rod mounting point on the steering arm at a point about 1.5" up the steering arm for R&P applications. How thick should the mount be (In the direction of the tapered hole)? What ball joint stud taper should be standard on this second mount (top and bottom diameter and depth of the hole)? Are there going to be tie rods available that are correct for the second mount? What size threads are used on outer tie rods for the various R&P systems? The questions in 2. above is predicated on the assumption that the available rack systems come with outer tie rods propper for the different year model Mustangs. Are these tie rods different than the original ones? If so, then the tie rod issue is going to be a mess.