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0311htp Frugal16 Z

At the top of the photo, you can see there is some room for improvement on the side of the plenum also. Just be careful not to grind through to the other side.
1989 Pontiac Firebird Formula TPI Head Work - Rocking and Rolling

 At the top of the photo, you can see there is some room for improvement on the side of the plenum also. Just be careful not to grind through to the other side.  View Related Article

 

 

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