Originally Posted by boston
Stang chassis isn't up for that kind of stretch and widening...
Yes it is. The 15 Mustang chassis is an evolution of the DEW Lite which was a shrunken version of the DEW98 (Lincoln LS/Jaguar S/Tbird).
Though Ford wants you to believe it was an all-new chassis, the 05 Mustang was supposed to debut as an 04 with IRS, but a last minute decision dictated the live axle and a one-year production delay. The main change to the DEW Lite was a new front suspension and a mild reworking of the firewall to accommodate styling.