As the title shows, I'm looking to upgrade my stock shocks to the STRC big bores. Now my question is this; How do I know which shock shaft to order? It appears that there's 2 or 3 different lengths available. I'm looking at amainhobbies.com, I might buy these at my LHS since price there isn't too crazy for these. Thanks for any help. BTW, I can't use my stock shock shafts. I bent them at the bottom where the shock screws to the a-arm, really bad location for the shock mount! Bent the front 2 last week and tonight I took care of the rears lol.