273 commando heads vs. standard
Because we are talking about 273 heads, I snapped some photos of one of the 920's I have. I have never noticed the bosses cast into the head below and onside the exhaust ports. Also it looks like the Julian date code is Feb 7 1970. Strange!
Because we are talking about 273 heads, I snapped some photos of one of the 920's I have. I have never noticed the bosses cast into the head below and onside the exhaust ports. Also it looks like the Julian date code is Feb 7 1970. Strange!
