| | and high flow b2 cnc oval port heads to the s&s variable fuel injection vfi ... and special billet velocity stacks for the ones that like a big carburetor ... the bottom end uses the same hardened forged steel flywheels and 1 1/2 press-in ... gear cover and velocity stacks cylinder heads are prototypes of the b2-race casting ... for twin cams and fully cnc-ported they ... 2 3/8 diameter exhaust ports exhaust pipes must be custom made these s&s 145 ...
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