I run C/ps and use 7 5/8 rear end. Made it 75 passes at 1.60 60 ft times on stock posi with 4.56 gears, jegs axles, rear support cover, a quality gear. Broke Posi Gears. Then put in a Detroit tru trac and have put 45 more passes on it with 60s in the 1.55. Run 12.40s in qtr. 7 5/8 has less drag then a 12 bolt or equal. Lots of guys are going low 11s with an auto.
This is on 3rd gen.org under drivetrain parts
In Illinois
http://cimg5.ibsrv.net/gimg/www.thir...0ea4d5e50a.jpg
I have a Dana 44 rear 3:92 gears fresh built posi unit ,new clutches new set of stock axles ..
new wheel bearings
has lower control arm relocation brackets installed , chrome cover
I am considering selling it or trading it locally will not ship .. trying to Gauge interest
$ 1550.. or better I do not NEED to sell it don't bother low-balling me not going to happen
I also have a new set of DANA 44 4:56 gears with install kit and gaskets $200 or best offer
if can not sell it here it goes ebay ...