Wagoneers
"1962-73 Wagoneers use 22 x 22 x 2 1/2 inch front springs with 9/16 ID bushings on both ends, and 26 x26 x 2 1/2 inch rear springs with 7/8 ID bushings on the post and 9/16 ID bushings on the shackle.
1974-75 Wagoneers use 22 1/2 x 24 1/2 x 2 1/2 inch front springs with 9/16 ID bushings on both ends (the same as 1976 up), but 26 x 26 x 2 1/2 inch springs on the rear (the same as 1962-73). The kicker on the rear springs is that they have a 1 inch post mount instead of a 7/8 inch like the 62-73's - same spring - different bushing. The shackle bushing is the same 9/16 inch ID.
1976 and up Wagoneers use the 22 1/2 x 24 1/2 x 2 1/2 inch front spring with 9/16 inch bushings on both ends, and a 26 x 31 x 2 1/2 inch rear springs with 9/16 inch ID bushings on both ends. "
Trucks
"1962-69 trucks use 22 x 22 x 2 inch front springs with 7/8 inch post mounts and 9/16 inch shackle bushings, and 26 x 26 x 2 1/2 inch rear springs with a 7/8 post mount and 9/16 shackle bushings.
1970-73 trucks with a 119" wheel base use the same front spring and the 26 x 26 x 2 1/2 inch spring with a 1 inch post mount and a 9/16 inch shackle bushing.
1970-73 trucks with a 131" wheel base use the same front spring but a 26 x 31 x 2 1/2 inch rear spring with a 1 inch post mount and a 9/16 inch shackle bushing.
1974-75 trucks with a 119" W.B. use a 22 1/2 x 24 1/2 x 2 1/2 inch front spring with 9/16" bushings on both ends, but a 26 x 26 x 2 1/2 inch rear spring with 1 inch post mount and a 9/16 inch shackle bushing.
1974-75 trucks with a 131" W.B. use 22 1/2 x 24 1/2 x 2 1/2 inch front springs with 9/16 inch bushings on both ends and 26 x 31 x 2 1/2 inch rear springs with a 1 inch post mount and a 9/16 inch shackle bushing.
All 1976 and up trucks use 22 1/2 x 24 1/2 x 2 1/2 inch front springs with 9/16 inch bushings on both ends and 26 x 31 x 2 1/2 inch rear springs with 9/16 inch bushings on both ends.
