here is the one my mate got made , i have used it more than him, and he ended up giveing it to me .
its very good as its fitted with rams at both ends so a shell can be lifted of a set of axel stands from a low hight , and then lifted up to a hight that it can then be turned over .its also on wheels so the shell can be moved around the garage . the end that fits into the chassi is also adjustable ..

thanks steven