8.75 or Ford 9”???

Sorry - I will be “that guy.” 8-3/4”
Sure 9” is cheap and more plenty.
You are paying for a 9” to be cut and made to a body specs or what ever specs. Just buy a b or c body rear or dodge truck 8-3/4 and have it cut down- same cost as cutting a 9” same work load. And use a 742 case. It’s honestly not much more and all Mopar. Never have to explain yourself like the LS engine in the fenders of a MoPar.
Off soap box.