Yeah, I think I tested at one point and I wouldn't bet any money that they would work back and forth. Honestly don't know if it would be worth messing with. I haven't checked the efficiency on the hammer but I suspect it's not all that bad.
Chong, if you *really* plan on ordering the stuff from ASP if it fits, I can test the compatibility of a 007 hammer in a Hammer. Honestly I'd say save the $, polish up the stock parts and check the efficiency. I suspect you'll be pleased enough not to spent the $.