Tightwad that I am, I just made a set of bar plates for my 4000 rebuild. Traced outline of both plates on appropriately thick sheet metal (happened to be galvanized) and cut it out with my Dremel. Drill holes with drill and smoothed the edges with grinder. Fits and works great. Done others in the past. Took about an hour for both. No muss, no fuss. Just sayinI believe 530010829 is for the bar clamp (clutch cover assy) for the 3800. The two numbers I posted are for the outer bar plate. The 530002603 PN was used on the 2XX , 306, 3400 - 4000 and the 530025924 was the 4200, 5200 outer plate with an adjuster slot added which fits the 3400 - 4000 series. I guess they they superceded the early plate to make the one fit all. The 530025924 plate is a little larger but works fine.