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722 Posts
There is a guy on the mach registry trying to trade his 03 cobra IRS for a solid rear out of a mach or a bullitt.. I have worked out a deal to swap the rear end out of my MACH 1 and also his bassani catback for my mgnaflow cat... The only kick is that I had hpp racing build my rear with 31 spline axels and 4:10 gears with posi tract... whats evryones thoughts on this?? also is there anyone with the IRS that can chime in on the good and bad, besides the famous wheel hop....