There are 2 running Ritter blocks out of Trumble's shop. One is ours with the Victor heads and the other is a 71 Duster stocker that went 10.36 in D/SA and have had none of the problems others have. As has been discussed the blocks require some work because they were meant to fit several different configurations. We got the latest version of his block and it appears that he fixed a lot of the things that are talked about on this site you just have to make it fit your combination.

Ray Buckner