Ok, so I have a few bolt pattern drill jigs left. They are laser-cut out of 1/4" plate steel and have the 4/110 Honda, 4/115 Yamaha, 4/4 Polaris, 4/100 older yamaha, and 4/137 Kawie / Can-Am patterns in it. To use it, you bolt it to the existing bolt pattern with 10mm bolts and drill through the new pattern with a 10mm or 25/64" drill bit. It doesn't work on all wheels. Wheels must have a flat and rounded center like the douglas wheels. On some models the tabs on the hubs have to be grinded off.
They are $45 with shipping and paypal fees included.
These are the jigs.
Jig pictured here only have 4 patterns; it was from the first batch.