Building a slant for torque

I'm always interested in what folks have done to squeeze torque out of a 225 slant. Please feel free to offer your knowledge here!

@Jim Kueneman, in the Peanut Gallery Survey thread, you noted the following:

Too bad you left Az you could have driven our Dart to see if that what you would want. Rusty and I just got a simulation model of the 225 that seem very accurate we could run with different components and relate to mine. Ours is 100% max torque build from 3500 and down and the model shows it.

What are the details on your build to get max torque up to 3500 RPM?