Help with U bolts

[dangerranger2008]

i have a 2002 ford ranger 8.8 rear with 4.10 and i am doing a swap for a 1997 ford explorer rear end so i can have disc brakes. the rear end from explorer rear end is 8.8 with 4.10 i need u bolts for the does any one know a part number or how long and wide they need to be.

 

[85_Ranger4x4]

Axle diameter (3.25") + spring pad height above axle tube + factory 4x4 lift block thickness + spring thickness + spring retaining plate + an inch or two extra = required bolt length.

Best I can do without my truck to look at.