sup all, ok i got lower rear control arms from Godspeed (fail) i kno but hey im poor atm

anyways i got questions and need answers from Exp, ppl that have had or have GS lower control arms
1) while i was installin these, i found that the Bolt to the knuckle with the 2 codder pin holes in it was not long enough, anyone found this a problem? and 2) where can i get a longer one? or am i just installin it wrong? idk but i tryed different ways to get it so i could put the codder pin in but no luck its just too short. can have pics up if u dont kno wat im talkin about just LMK. need help, and BTW what is rear end called, you kno, the big frame where all the toe,camber,diff, etc, etc bolts too? LMK thx