How much is it droped? It could either have shorter coils in front (most likely) which you need to replace, and probabloy new hangars and shakcles in the back.
Or is could have a flip kit in the back and/or spindles in the front.
You would have to get new stock ones of whatever they used to lower it.
Is it that much of a deal. It might take a lot of money to get parts to get it back to stock hieght. Unless you can get used stuff or maybe check ebay
Troyer Tuned-3.5" AF1-Magnaflow SI/DO
Eclipse CD 8053
Rainbow Profi Vandis, active
Arc Audio 4050XXK
15" SI Mag, 2.5 sealed
Arc Audio 1500XXK