T/A All the Way- A dish in the piston actually makes for a more efficient chamber- closer to a sphere (the ideal). But use a D-shaped dish, to maintain a quench area.
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons?
... or has built a record breaking DOHC hemi four cylinder Pontiac?
... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967)
... or has a Pontiac born the same year as Jim Wangers? (1926} 
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