Pardon please -whilst I interject one thing -What I was really after --was power mods - for all engines -not who has the most power - best prices - etc..- power mods - power tricks - tests that show how to improve performance- that kind of stuff.
anything else - well count to ten first then see if it really fits.
I know there are power mods for piston ported engines - I have done them- at least on one - the G62-and I had a twin custom made -a 4.8 that was very nice, smmoth engine -reed valve setup -it was , however just not a design which lent it'self to smokin! it turned a 24 x10 Zinger at 6200 as I recall.and weighed five lbs- so - It got sent on to a home where it could be better appreciated.
(meanwhile, back at the ranch--)