You can't do much with a 617 turbo engine,not made for high rev's.Propane would be the easiest power add on. Set for about 6 psi at full throttle.So much cheaper than buying a myna pump.Or replace with better diesel.I saw a cummins in a old Caddy.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt