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Thanks Phil - this is REALLY interesting to me. I just had a quick look at a car with the dual side drafts - it had been running in one of the early warm-up races for the Pittsburgh vintage Grand Prix.
My question relates to your statement about hot rodding the engines. I would presume that, like any other vehicle, you could take that to an extreme. My question is, what can be done at a relatively modest cost to tweak a bit more performance from the engine, without sacrificing durability and reliability?
Dave
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