I bought these from ballistic fab and decided not to use em.
$25
Located in Paradise,ca
heres ballistics info on em:
63" Chevy spring frame brackets cut from 1/4" A50 steel. Features 3" mounting width separation for use with 1/2 ton 63" chevy leaf springs. Drilled to 9/16". For use with our 3" poly bushings. Includes two brackets. Part # 1047