For all of those who have converted from one of the 'infamous' interchangeable caged pullies over to a Metco interchangeable...what are the odds that the rings from the JDM pulley will also fit the Metco hub? They both utilize six allen bolts to mount them so I was wondering how close they are to being interchangeable with one another. I like the fact that the JDM pulley has a true 6 lb. ring while the Metco 6 lb. is closer to a 5 lb.'er from what I've heard but I like the fact that the Metco would allow me to go cageless. I have a strange feeling that my current pulley isn't coming off without a fight and I'll be damned if I'm going to pay $150 to update it to a "new and improved" style that's still a be-yotch to take off.