I've borrowed a cargo trailer from a friend's dad a few times now and upon returning it last night we got to talking about my truck, his suburban, trailers, etc... then he tells me that he's headed to SEMA in a couple weeks. So I asked "what for?" and then he showed me -- he owns and manufactures the "Uni-Dolly"
www.uni-dolly.comHas multiple attachments for lifting/clamping vehicles, boats, axles, transmissions, engines so you can work on them. At a fairly reasonable price too. I'm not trying to make any kind of sales pitch, just wanted to share with all my fellow gear-heads. :)
Oh, and it is 100% built in the US of A.