727 support housing

Does anyone have the dimension locations of where they are putting the additional grooves in it? It does not have the roller bearing mod done to it. I could probably guess on it by looking at pictures. Thanks

There are a couple of ways to do it, you can groove only the part of the support that extends out of the case, like the bottom three in the pic below, but this relies on fluid supplied by the shaft bore of the support, or you can mill the flat spot further to the rear and add a fourth groove that gets its fluid supply directly from fluid input port from the cooler.