I had the opportunity to do some work on my cousin's 2012 Boss 302 this past week upgrading the stock rear suspension components. This was something he had been looking forward to since being deployed to Afghanistan this past June. We discussed his goals and covered a few options and came to the decision to install the UPR 1999-11-03 pro series II suspension package:
http://www.uprproducts.com/mustang-s...anhard-11.html
We began by removing his lower control arm and installing the LCA relo brackets. I have installed suspension components made by just about every major vendor and I have to say the UPR LCA brackets were the best fitting af them all. No prying, bending, no drilling, no clearance issues. FWIW - There is a another vendor who claims UPR copies everything they produce. They must not copy the fitment issues of the other vendor.
Once finished with the LCA relo brackets we installed the solid bushing into the rear end housing. Out of the entire install, this was the most time consuming part. The stock busing just didn't want to come out so we pulled the rear and used the BFH.
While the rear was out of the car we installed the upper control arm mount along with the upper control arm. Everything fit like a glove. We stabbed the rear back into the car, starting with the stock UCA length, and installed the lower control arms set to the stock LCA length.
Finally we installed the adjustable panhard bar and reconnected the stock sway bar.
With the rear suspension components installed, we set the pinion angle to 0 degrees (measuring at the proper points - back of pinion flange and front crank) as all components are rod ended.
After the pinion angle was set we adjusted the panhard with full load on the rear suspension.
Some items to note for the install, the UPR LCA's and panhard bar are lighter than the stock components. The UCA and mount were slightly heavier than stock. The measured differences are:
LCA's - ~4lbs. total savings
Panhard bar - ~3lbs. total savings
UCA and mount - ~2lbs. total gain
At the end of the day, including the LCA relo brackets, the weight differences between stock and all UPR components is basically the same however the UPR pieces are much stronger and the suspension greatly improved.
Many thanks to UPR and Sharad for the kick ass components and support.
Pics below: