Dana 60 Tru Trac Shortened

I have a shortened Dana 60 with Eaton Tru Trac and 3.55 Richmond gears, Yukon 35 spline axles, green bearing, Strange Engineering 1320 yoke. The housing has Mopar ends and the axles bolts pattern is 5x4 1/2. The housing measures 50 inches from flange to flange,(not axle flanges) so in an A body mini tubbed with the springs relocated the back space on 10 inch wheels would be 3 1/2 to 4 inches. I have a 69 Dart with a 49 inch Dana housing flange to housing flange and I use 10 inch wheels with a 3 1/2 backspace and run 325 x 50 - 15 tires or 315 x 55- 15. The differential has a 1 1/4 offset to the passenger side and is all new never had oil in it. $1300 Located in Petaluma Ca 40 miles North of San Francisco. You will have to pick it up.