I detonated my 7 1/4 on my 318 after a cam change, intake and 600 carb.
Strange S-60 Options:Body Style: A-Body; Width: Stock Mopar; Perches: Stock Mopar Measurements (+$120.00); Powdercoat Housing: Yes (+$175.00); Cover: Powder Coated (Black) Aluminum "S" Cover (+$50.00); Axles: 35 Spline; Carrier: S-Trac/Truetrac (+$320.00); Gear Material: Standard; Gear Ratio: 4.10; Studs: 1/2" X 2"; Yoke: Cr-Moly (+$50.00); Reproduction Pinion Snubber Plate: Yes (+$70.00); Custom Measurements/Notes: 56 5/8 assembly width; | $2,935.00 | 1 | $2,935.00 |