I worked with Dwayne on my mild 541 build. The application is decidedly different since it is a very heavy car with an automatic and 3.23 rear gear. We planned for the 518 OD transmission. The cam is a 235/241 hydraulic roller made to play nicely with the power brakes and still make silly amounts of torque through the mid range.

I've got the engine together now and trying to work out the scheduling to get it on the dyno.