BTW, you are nearly at double the power on the 617. This is using the stock turbo and a big injection pump right, basically?
I might have to do the same thing with the engine in my Studebaker
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.

[SIGPIC]
..I also have a 427 Cobra replica with an aluminum chassis.