It's nearly done. My excel sheet for creating WOIN races based on the Racebuilding engine should be completed soon. Only thing left to do is work out the skill costs formulas and add another sheet to populate in the proper format.
The Racebuilder Engine Worksheet is complete. Download it or make a copy and run it through its paces. There's bound to be a few formulas not producing proper costs. Let me know about any issues that pop up and I'll try to get them fixed.