Wow thats a crazy HP number for a cam! Really exciting stuff, I have to be a skeptic as this seems to be a super hero HP gain (31% of my motors stock output) number but I am sure it won't disappoint as with Bills other products. Been months later and I still can't get over my GL4... With a cam and rockers a claimed 75HP! (again skeptical, but an optimistic one for sure) wow with the already great things being done for the 6.5 we'll be well into duramax territory which to me is just awesome.
On the topic of girdles, there has been mention of 5, and 3 main mounts. Whats your opinions on which one is superior? If I had a 6.5 block laying open in my garage I'd just model the mains in Ansys and preform a stress analysis but that will have to wait as my garage barely holds my Tahoe!