The basis of our engine is a Hellcat/Demon NEW Block, but we primarily build strokers, so we build it as a complete BluePrint Engine, and not just adding a blower or intake on a stock chrysler longblock. So ours would have a BluePrint Manufactured rotating assembly, all forged of course. The foundry is the same one used by other high performance brand name cranks...that may start with C, or S... only we machine/balance them ourselves. we also dyno every engine we build, have a 30 month warranty, etc. The Gen III game is a new one for us, but we're unique in the fact we're a 40 year old company, manufacture from scratch, 100 engines a day, nearly 400,000 lifetime. We use all 100% new components on the hemi, make it 426 CID, etc. I'd invite you to check out our plant tour video and see what an operation we have going here. Happy to answer any questions I can. I'm our resident Hemi/Mopar guy, and the Product Director / Shareholder of the company. I own 5 late model hemi vehicles, and my only non hemi vehicle is my 74, 408 dart. My dad retired from Chrysler, so I am very passionate about this offering, and keeping BluePrint in the Mopar game/ helping you guys as much as I can.