OK, I've searched around and haven't really been able to find an answer. I'm having my 3" Supreme Suspension front level put on this Friday and I'm leaving the back of the truck alone until I can see how it looks then I'll be deciding on which size shackles to order from Coach. My question is if I'm needing a diff drop with the back currently not being lifted at all or only after the back gets lifted?:dunno: Also, if needed, where could I go about getting the spacers by this Friday? Thanks in advance!