mesurements for rear leafs....

hey i was just wondering if anyone would have the mesurements for the rear leafs of a 90 3/4 ton 4x4 would be from hole to hole... ?? or if anyone would know if they would work in the back of a 97 yukon ?
Any info would be great, im lookin to see if anything has the same length or 53 inchs from hole to hole...