Jefe, I'll call you when it's all bolted back together. The heads had a thin deck and were contorting under boost. The new heads just showed up. I need to have the turbo headers rebuilt because of the higher port on the head and the new header bolt pattern. It'll probably wont be back on the road until sometime this summer. I'm thinking about selling the AEM and doing a Haltech while it's down so it could be even longer. I've got lots of time to mull this IRS vs SRA thing over.
Another IRS owner mentioned that snapped axles can a lot more damage when they flail around. If lower HP cars are snapping axles I'm going to do it for sure, and probably on a routine basis. I drove Mike's Cobra back from Tombstone when it had the IRS and it wasn't anything to write home about. Granted it probably had all the stock rubber junk in it. Jefe, if you get the FTBP done if yours you'll have to take me for a spin up the mountain.
The IRS will shines in a bumpy corner and won't "skate" the rear end to the outside on a hard corner like an SRA will. It removes 65 lbs off the unsprung weight at each rear wheel which is huge, makes the suspension more compliant and can be de-cambered improving the cornering grip even more. For regular driving you probably won't notice the difference between the two.
The stock axles actually hold up better than you think after you fix the suspension and diff. As long as you’re not dumping the clutch a 4K with slicks they should hold up fine. A turbo should be easier on the axles over a PD blower with an explosive bottom end because the boost really comes on after the car has overcome inertia.
Very nice Fox body Mustang. I can just imagine the hardware you have taken down with this. Its appearance is just enough to rope-in some unsuspecting supercar owner looking for an easy kill :mj: until your motor gets on the "step" and doles out a healthy dose of humiliation from a 20 year old Mustang :banana: