Not sure that hood is right. That one is what you would normally find on a 237. The A model has a different shape. Here is a Feb 1969 237A which was NIB so has to be correct. Is yours Canadian? ::Neil::
oops missed this mine is US made and I am quite sure this is the correct vent for the "all green" one. all the "all green" 237A I have seen looks like this here is another example of "all green" 1974 completed on ebay which is later than mine. is yours Canadian? (a guess from the wheel and vent)
