The roll bar, does it weld in or bolt in? I'm looking at adding one to my sammy (JDM models don't come with them) so that I can use it to mount lights and other doodads, get my half-top to work, oh and for safety I might import one or just get a similar one fabricated. I know that the brace for the targa bar on the JDM models instead braces against the roll bar on the US models, but I don't know how it attaches to the body.