Best US made 9.25 limited slip posi

Building another 440 Bluesmobile K cop car. Has a 3:23 one wheel peel. Who makes the best US made 31 spline 9.25 posi unit? Axle and front differential seals? Crush bearing etc. Total rebuild. Tired of the low quality stuff. Thanks

Also have a complete running 318 eddy intake and carb, 727, driveshaft, rearend springs etc etc. Was running fine until removed yesterday. 70669 2 cases Coors Light

Dr Diff is the man

http://www.doctordiff.com/

Thanks, must be in a white out. Two calls during the day with no answer. Will keep trying. Phish

he shows up late and is super busy but does get back

US Made? Hah! There are very few manufacturers ANYWHERE. Besides USA maybe Australia has a manufacturer with something, never heard of it.

For my $$ the Detroit TrueTrac is the best.
There is a Dana Trac Lok
There is the Auburn cone type
There is a Detroit Locker which is not a limited slip

Any more?