yeah man i actually got lucky today and i think found the same arms you have. i called and called this morning trying to find em and no luck. atv fourplay dude kinda laughed when i asked and said man we aint built them in a million years and then right when we was done he said wait i might know someone and gave me a number to fireball racing because they use to build those arms for them before they started building em. so i called and he can get me some and they take a 18.25 shock for 550 with heims and 650 with their billet ball joints, i think i will just get the heims when i sell my arms and shocks