S4E13: Stacey rolls the V8 Interceptor Cougar back into the shop and begins upgrading the rear end and rear suspension to handle all the massive power that has been stuffed under the hood. The parts are flyin' as in goes a custom 3-link torque arm suspension, a 9" Ford rear end and a tubular sub-frame to prevent the car from flexing. If you have a classic Mustang or Cougar, you're gonna want to see this! Then, Stacey shows you where to get parts for your Mustang or Cougar project by paying a visit to a special salvage yard.