Join Date: Apr 2006
Location: Winston-Salem, NC
It's Legal with stipulations...
We can swap an IRS from any Cobra (99-04) because the street prepared rules couple all SN95s together:
Mustang (SN95 chassis, NOC
including Cobra & Cobra R)
15.1 AUTHORIZED MODIFICATIONS
C. Equipment and/or speciﬁcations may be exchanged between different years and models of a vehicle if (a) the item is standard on the
year/model from which it was taken, and (b) the years/ models are
listed on the same line of Appendix A (Street Prepared Classes). The
updated/backdated part or the part to which it is to be attached may
not be altered, modiﬁed, machined or otherwise changed to facilitate the updating/backdating allowance. Standard factory installation
methods, locations, and conﬁgurations are allowed. The updating
and/or backdating of engines, transmissions, transaxles, and/or unibodies must be done as a unit; component parts of these units may
not be interchanged. Cars not listed in the Street Prepared sections
of Appendix A may not be updated/backdated until approved by the
SEB and published in the ofﬁcial SCCA publication.
Note the underlined statement, Doug said that this means that you may attach the IRS in the exact same manner as a 99 â€“ 04 would have gotten from the factory, meaning bolt in, NOT WELDED. From what I remember, you have to drill a hole or something like that...
So, this is cool news. Yes, the IRS is somewhere in the neighborhood of 85 lbs. heavier (in the right place I might add) but a LOT less UNsprung weight. With the right bushings, bumpsteer set and some tuning, it would seem the IRS could be really fast.
96 Maximum Motorsports Cobra + AST 4200s
DD 10 VW GTI DSG | OZ Superturismo GT