http://search.auctions.yahoo.co.jp/sear ... 2&auccat=0
this is direct link to yahoo auctions japan with sentia parts... ranging from wheels, body parts, aftermarket body kits(aimgain, evolution[probably knockoffs]) aswell as aftermarket lowering springs, adjustable suspensions, etc etc etc...
you can add HE or HD behind センティア in search tab, so you dont have to go through 60 odd pages:)
only problem is sellers dont ship out of japan,
but there are a few vendors on VSC forums who can help you out!