Thanks Bill, I was confused about that at first, then I read about putting the vice grips on the flex plate, but I decided to buy an air compressor and an impact wrench.
The IR and compressor I bought at first were too light-duty though - a small compressor and a 400 ft-lb rated IR didn't do it. I bought one rated for 800 ft-lbs and hooked it up to a larger compressor and it it came off no problem. It was getting late, so I decided to finish this job on the weekend. I've got the bolts and a couple washers, but now after seeing the pictures/videos of other people taking the HB off, I think I better get some stronger washers - the bolts that matched the specs you provided seem a lot weaker than the bolts that are in the puller kit and the heads are a lot smaller.
