tclederman: The two blocks I've able to purchase so far came from Chevs of the 40's. For a '46 the only ones available from them were #476100 (mounts to the rear wheel cylinders)& #497756 (mounts via a clip onto a tab welded to the rear axle). The configuration I'm looking for (re:
picture ) is completely different. Both have three threaded ports for the hydraulic fittings. The only difference is the way they are mounted on the frame. One is bolted and the other held on by a spring clip.
