finally got motivated to do the install i have been dreading, anytime i have to deal with mustangs and exhausts its usually an ordeal. thankfully the bassani catback came off effortlessly. next i pulled the 5 differential housing bolts off, and put the jack under the diff per the supplied instructions from BilletFlow. next i took off the two Differential Mounting bolts that connect it to the IRS Frame. Put the IRS brace up there and hand tightened the first 5 bolts (had to raise the jack/diff to clear the middle bolt from the crossmember thingy), then i put in the upper Differential Bolt (once the jack/diff is lowered the length of the bolt makes it impossible to install due to clearance with the IRS frame thingy). then i tightened all the Housing bolts, and lowered the differential and installed the final Differential mounting bolt, and torqued everything down to german torque specifications (Gutenteit), as there was no ****ing way to get a torque wrench to any but the bottom most two housing bolts. Reinstalling the Catback proved to be the issue, i could not for the life of me get the front hangar isolator on, took a good half hour, many screwdrivers to finally pry it into place. attached the rest and was done. All in all, took about 4 hours, including the 30 minutes to go out and buy a set of Ramps (35$ at Vatozone).