Firsts and Lasts in Motorsports

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Conversely, the Ford Indy engine had some marked success in dirt track racing. The trick was to swap sides on the cylinder heads so the header pipes wouldn't be blowing directly into the driver's face. Here's Big Al's version:

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Very interesting. I was unaware the front engined dirt cars used the DOHC Indy motor. Am I correct that this would be a very expensive motor for this class of racing. I thought they simply used tuned push rod engines as in many other racing applications,

The front layout calls for a completely different exhaust system. Can you explain a bit further on the exhaust layout changes.