ok suggestions. I would just do it right and save yerself some $$$. One company mentioned sells them for 135$ w/shipping. I know they're hot-rolled but still. If you can't weld I'm sure you can find a local competent welder to throw 'em on for $100. I don't think the Four Real sliders are made for Toys.
I do like the fact that the Bentup rockers have the "U" plate that wraps around the frame for the bolt-on version. Weld those suckers on and they ain't goin' nowhere!