im almost positive its a 1:1.and the bell housing should fit big and small block engines and all years as far as i know because it was originally (by originally i mean found on) out of a 71 demon so it should.
looking for a working 4 speed 833 tranny with overdrive (.71:1 I think) I can either trade for my standard 4 speed transmission but i have a few drag parts for the transmission as well, such as 1/4" steel bell housing and scatter shield.