John,
.....our 917 is done from factory prints and our own hand measurements from original cars (which very hugely)...be sure to bring your own copies along as reference...
We are not building a modern race car...we are building a replica of a 917.
Your comment of comparison is a little confusing......maybe you would be better served with a Radical or something more modern......917 are notorious for having handling issue if not properly setup......this car killed many talented drivers in the day and its no different now!!!!!!!!!!!!