heres a link for some spax lowering springs, there a 60mm drop and there cheap worth a look
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=40192&item=7942823526&rd=1http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=40192&item=7942823526&rd=1