So I measured the stock crossmember and another crossmember that i've got lying around from a 74 3/4 ton pickup, I measured the same points on each, a flat place on the front top and bottom inside of the UCA mount stand and here's what I got.....
..............Top.........Bottom......Center-Center of the front bottom bolt holes
Stock....29-7/16".....29-3/8"......26-3/8"
3/4 T....29-3/16".....29-1/4"......26-3/8"
Chppd....28-3/4"....28-15/16".....26" (these are slotted)
My dads got a portapower(?) so we may try and see if it will spread and work, or is this one lost? If so i'll try it again, and hopefully get it right this time around.