I would say no. Not only would that ruin the structural integrity of the head but heads are designed to be ideal for aerodynamics and the holes would effect that.
It shouldn't matter. Any head should fit on any shaft
No, you should never have to trim a head gasket. If the holes do not match up, you have the wrong gasket.No, you should never have to trim a head gasket. If the holes do not match up, you have the wrong gasket.
The 2013 Buick LaCrosse has 37.3 in. of rear head room.
The 2010 Buick LaCrosse has 37.3 in. of rear head room.
The 2008 Buick LaCrosse has 39.4 in. of front head room.
The 2005 Buick LaCrosse has 39.4 in. of front head room.
The 2010 Buick LaCrosse has 38.0 in. of front head room.
The 2009 Buick LaCrosse has 39.4 in. of front head room.
The 2005 Buick LaCrosse has 37.2 in. of rear head room.
The 2012 Buick LaCrosse has 38.0 in. of front head room.
The 2009 Buick LaCrosse has 37.2 in. of rear head room.
The 2014 Buick LaCrosse has 38.0 in. of front head room.