Noisy rearend 69 barracuda 318 car

@ fuzzman - Based on your noise being on accel and decel, I'd have to agree with other posters here that it is a pinion/carrier bearing issue and not an axle bearing. Because 7.25 rears do not use the crush sleeve your changing of the pinion seal is likely not the cause of noise. Agree with many posters on here that cost of "fixing" your rear end far exceeds that of finding and installing a used replacement if you stay with a 7.25 type.
I know you guys keep saying just find another rear for it. The problem is this car is a numbers matching car is there an easy fix to quiet this rear down. I have a 8.75 case laying around in the garage that came out of a early 60’s b body car it was mounted on my 67 when I got it. I could shorten the housing to fit an abody and by the remaining pieces I need to make it whole and go that route. But like you guys keep saying that you can pick up another 7.25 fairly cheap but who’s to say it won’t have the same issue. Thanks for all the input
Pat Faley
67 NB S Clone
69 barracuda vert
East Peoria,IL