SJohnStone: here's a shameless plug. I have the lift boxes for sale on ebay right now, I can't tell if you need them(pics have a bad glare) but if you could that would be great. Otherwise just check out the pics and compare or use as a reference. Believe me the p.o. isn't the first to lose the sunroof, never ever tow these things backwards w/ the sunroof up. Or like it was said earlier, driving straight w/o the rear locked will lose the sunroof too. There is amazing lift on these things. Anyways, here's the link:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33652&item=2409951991&rd=1