- Dec 22, 2010
- Cincy, OH
I am going to chime in since I believe I am qualified to speak based on my ownership (2000 GT, 1999 Cobra, 2004 Cobra first with the IRS, now with SRA).
I HATED the traction on both my 99 Cobra and 00 GT in their stock forms. It just wasn't there. So before I got rid of the GT I added lowering springs (helped) and was going to add LCAs and some big meat out back. Then I got the 99 Cobra. I was told I needed half shafts, tires, $700 in bushings, and a brace not only for traction, but also to make sure I didn't break any of the weak components. What a crock. I sold the Cobra before I procharged it and took a break from Stangs.
I got my 2004 in February of this year stock. The IRS was just as crappy as I remember the 1999 being (which I had in 2004). So I look online and imagine that, no cheaper prices/better solutions, just the need for the same $2500 worth of stuff.
A friend with a Mach 1 wanted the IRS to carve corners, so I gladly obliged. I could not be happier. I have NO mods on this SRA (yet) but already I know it is going to be great. I ordered a 3 link kit from MM and over the winter will be adding the FLSFCs and LCAs, then installing the Torque Arm/Panhard bar. And now I can get wheels that will easily let me run a 335. How do you think my traction will be in a straight line?
My general comment is if you wanted ride quality, buy a Lexus, although I have noticed little to no difference between the IRS and SRA. Maybe because I don't flog my car in corners where there are rough patches and potholes, I don't know. But when I go to launch my car and have no fear of breaking a half shaft at stock HP levels, it feels great. And when I have 600-700 rwhp after a twin screw I will feel better about having my prepped SRA with bigger meat than the compromise of an IRS the 99-04 Cobras got.
I have yet to actually drive a Cobra or any mustang with a IRS. Mine is a DD that I want to make a little more nimble in general. I have no "goal" for the car ie. drag car or track car. I'm doing mods that actually work. I put on rear LCA's with a spherical end, I have 4.10's awaiting install. Aluminum DS will be next followed by FLSFC's then prob stop.
I'm glad I didn't go IRS with all the money it would take to beef it up. I'm stock power wise too. I have asked people from amature auto-x guys all the way to championship holding roadracers...and they all say to stick with SRA.
"All the fastest cars in the American Iron are a SRA car."-Paul from Paul's Automotive here in Cincinnati.
From what I have read/heard, that by the time you mod the hell out of the IRS to be a GOOD rear, you have taken the IRS out of the IRS...stiffer springs etc.
I've been wanting to drive a car with PHB/TA and see how comfort is. No I don't want a Lexus but I do want a agile "muscle car". If I can do all those mods and it rides relatively like stock...I'm happy. I also realize that you have to give a little to get a little. Give up some quietness and gain some NVH.