My car has a BR coded rear end, so it would have originally had 3.07 gears in it, would this rear end only come in a car with an automatic or could it come in a 4 speed car? Car is currently a 4 speed w/ 4.11 gears. There was a hole in the firewall near the distributor that I patched 2 1/2 years ago (didn't know it was for the speedo cable).

Dan E.
69 SS396 4spd. 4.11 posi. x66 coupe