there really is no cheap solution mate, the only thing i can think of thats cheap is cutting your springs, but thats one of the dodgies things you can do to your ride, the best thing that you can do is go onto Ebay and get yourself some King Springs, there are heaps on there for VS's that are selling for jst over $200... the only thing that you might have a problem with is being a wagon you mite need some new shockers if you make the car too low cos it will scrape!
here is a link!
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&category=55436&item=4565663678&rd=1
this is your best bet mate....