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?
See what you started troublemaker! Lol...