The SSD12 is a universal kit, mainly for older 4x4s, but will work on I beams, too. I'm lucky enough to have a flaps that carrys exlusevly Moog parts.
I beleive that you're talking about my catch pan? in the pic, it's kind of misleading, because you can only really see the turned up edge. It's a home made pan, 1/8" thick aluminum.