I sure do. Get a F**d either 8" or 9" out a a 60's/70/s series. The tag on them tells it all, as far as ratio. The 10 and 12 bolt Chevys use the axle for the inner bearing. If you munch a bearing you have to do an axle and a bearing. The 8" F&*ds are really hard to find in the ratio you want, however they came in the V6 pintos and bobcats and maybe some wagons. The 8" is preferable for your power as the 9" has a pinion angle that uses more power. Maybe get a 55-64 Chavy rear that has the right gears. They were built right. Sorry that I've gone on about this, but the way that the manufacurers have screwed the public has p****ed me off.
Dennis