Im assembling my motor myself in my garage as from the research ive done its no different than any other forged motor, or I would say have Darkside put it together they put together alot of forced induction motors with great results and they will stand by all their work as for any building failure they will take full resposibilty, look at miguel motor runs 50psi with no problem, they may not put have put a subi motor together but thay know what is required to make a forced induction motor stay together and last!!!