If you change the ratio you’ll need a posi unit too. Just changing to the posi will help the spin factor. Can’t remember if you said what engine you have but that has a big factor on gears so I’d look for something in the 3.20-40 range, best of both worlds. Then finding gears made for your rear (10 bolt-12 bolt) would be the next problem. Big ball of wax, maybe leave it till something falls in your lap.
Looked and saw you have the 327, they like to rev so maybe a 4.10 would not be tooo bad.