It's like building a new house you want a good foundation to start with no sense in building a 700 plus hp motor on a block that could split apart at any time I'm not a BBM guy been looking for a good R block they are out there but you have to look hard and ask many people who might have one and Indy does have them for sale but when there gone that's it would have been nice if Ritters block would have worked out im sure he could sell them with no problem