they r just hard springs which drop urz ride abt 2 to 5 "...!
and no u cant fit lower springs in a belta i kno that coz i used to own one my self.
@jz..i imported the orginal type R rear bumper and side skirts from japan , my cozen sent me those and the air master extender (frount), i have em in fiber glass if u need ... u will not find these any were in pak...!! only in japan and they cost a lot.. my coped one r cheaper and with the same quality and in stock. cal me if u need em. 03008474869