I have been asked to come up with a streetable combination for the slant 6 engine and run on pump gas, so this is what I've come up with.
engine:225
compression:8.14
valves: int.1.70-exh.1.44
intake:Production 2bbl 250cfms
exhaust:hedders 1 1/2 44" long with 2.25 turbo mufflers full exhaust...