I just did this last week with a drill and no adaptor. For the front wheels... Turn them all the way right to get behind the front left wheel and all the way to the left for the right front wheel. Made access to drill a breeze.. and I was using a big cordless Dewalt drill.
As for the back I found that using the factory jack to lift the rear frame up gave me enough clearance to drill the holes in the back as well.
All in all its an easy project.
