Update:
After 2 months of driving I can offer the following report. Current status - As built.
Gear roll over noise with the solid disc is quite a bit more than hoped. I do believe I will be swapping it out for a sprung one later this summer. The problem occurs primarily at any point where there is very little torque in the drive train.
I drove it for the first month having no idea where the timing was at. I then timed it, and found it to be 2 degrees retarded. I also discovered this IP is shot! NO variation in timing whatsoever over the RPM range. So it needs to come out. Ah... the coblers children have no shoes. I'll be running it for a while yet.
With the dismal pump, and tires that leave a lot to be desired, I am getting a consistent 21.6 MPG on #2. Not too shabby. But 24 was the number I had in mind, and I am going to keep working on it until I get there. It's definitely built for speed though... the fastest I dared to go around here is 82, but there is plenty of throttle and RPM's left well beyond that. It does 70 at 1850 RPM.