the rear diff in my 04 f-550 is howling and needs to come apart but befor i do this i need to find out where to get parts,and specs on it . the rearend is a spicer 130500 with a LSlip with 488's gears.

 

Rear Differential Parts - Auto Parts Warehouse you can try here heres some more info you can look into Palmer Johnson offers 100% genuine Spicer / Clark Hurth replacement parts. 1000s of parts in stock, ready to ship. Call Palmer Johnson for expert support, diagnostics and fast, friendly service.

Call 800.341.4334

 

thanks il try that.