Need help!!

Anyone heard of dropzone springs?? Also, when you see these ebay bids... DropZone springs on ebay (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33582&item=2418999544) and they say 82-92 camaro/firebird, they will work on 93-97?

Any insight would be great guys, thanx..

Also anyone heard of Vogtland springs?? Here is the bid..
Vogtland springs (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33582&item=2418493463)

Only the rear springs on 3rd and 4th gens are the same size. I don't know the rates between the 2 off the top of my head.

The fronts are no where near the same.