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            Original Message        
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		| Tough fit onto Fairlane/Mustangs. | 
	 
		| By Dave Shoe - 09/14/2002 11:32:04 AM; IP 67.4.132.77 | 
	 
		The 1965-earlier heads are great for performance, but they lack the eight extra bosses which allow the diagonal exhaust bolt mounting pattern to be drilled into the heads.
  Basically all 1966-later heads (except 427 racing heads) got the extra bosses cast in and they were drilled as required (either vertically or diagonally) at the engine plant.
  Shoe.  | 
	 
 
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