[sirelesar]

Thanks for all the feedback.
Mike, the 79-93 Mustangs have 9/16" - 18 tpi rods. My rack is mounted directly to the front cross member, and is pretty stationary. I think the MII rods are 1/2" fine thread. I will be measuring them today. If I could find an adaptor for the rack rods to a self-lubricated ball joint, I would use it in combination with Maximum Motorsports bump steer kit for the 79-93 using the tapered pins. I am hesitant to drill out my spindles, but anything goes. They were used spindles anyway, and I am beginning to believe they may be part of the problem. Who knows how close they are to tolerance, or if they were bumped/bent by the previous owner.

Dave,
I have a measurement set-up, but it is unnecessary, as the yaw in the car is quite noticeable. I will use the instrumentation for actually setting the anti-bump, but I need to know what my options are before I begin.

cobrashoch,
Good feedback. I had a standard MII setup a week ago, and as you say, there was contact with the fiberglass (ouch). At this stage, there was a slight amount of bumpsteer - still an irritation, and caused some yaw. So in an attempt to fix the contact, I narrowed my lowers by 5/8", and the uppers by 1/2". I did that to keep some length ratio, but in retrospect I should have done both by 5/8". That would have given me the -1.0 degree of camber that I was looking for. As it is, I could only get to 0.0. I will probably wallow out my slots at the upper A-arm attachments to get the rest. Once I did the shortening, the contact problem is gone but as you stated, the bumpsteer became significant. My rack is pretty stationary, so I dont think that I will have a chance to alter its position. I need to cogitate on what you are saying with the shortened rack. I don't know how readily available a shortened rack is, or if you are suggesting an at-home modification. If you could, please expound on this.

tpiini,
The MII alignment is OK, but the camber range from OEM is between -0.3 to +1.3. For any performance, I would want to be around -0.5 to -1.0. I don't see that the shortened A-arms are adversely affecting the instant center.