I used US Cartool subframe connector after considering making my own. They are a very nice product, but it took a whole lot of cutting and grinding to get them to fit the contours or *my* floorboards. I had replaced the front floor boards, not the rear. So the floor contours were not "factory-aligned" between the front and the back. (The original floors would have been stamped out of one piece.) I think, after going through that pain, next time I'd just make my own, unless I had replaced the front and back floorboards with single-piece units.
