Narrowed 8.75 rear question

A while back I posted a thread on a 8.75 rear housing I had bought and was wondering if it was to narrow to us on my 72 dart. It was narrowed to 48 inches. A member had sent a reply telling me that he or she had a dart that had a 48 inches rear along with some pics of the car. I did not save the response. If you remember sending it please respond again. My dart has relocated springs and has mini tubed wheel wells. If any body any comments please respond.

Thank You