Wide wheels and custom narrowed rearends have been around for decades; however, we wanted to go slightly narrower than stock-and do it cheap. An E-Body rear is 1.3 inches narrower than the '71-and-up B-Body rear, and much cheaper than narrowing our original axle. We had one we pulled from a Challenger at the boneyard for a song. The difference in width can be seen here with a straightedge against the axle flange. It should be perfect for our application, and allow even wider tires on the deep-dish mags we want to run.