Help destroyed 7 1/4 in a /6 dart

i have a 1964 dart with a 225 4 speed 3.55 in a 7.25 beat on that littler bastard day and night no problems, i even had a 318 stock 4 speed and 7.25 beat on that all day too until i sold it. Honestly i would go with a 8.75 rearend with small bolt pattern axles its going to be the same work with any rearend need to shorten the shaft, shock plates.

Theres a guy who sells the housing abody cut to fit on ebay for 250.00 get some Small bolt pattern axles 75.00-100.00 bucks, backing plates 100.00, shock plates $100.00 then hardware new drums, and gear set of your choice i picked up 3.91s for 100.00 on craigslist. $600.00-700.00 got yourself a solid rearend. lol