The head would make a nice upgrade for a rider that added that with some flame arrestors and re-jetted carbs. I'm not sure of the condition of the domes or what compression would be added to the stock 150. It should bring a quick hundred bucks to offset your costs if the domes are not eaten up with detonation.
I have those replacement Ultrac sponson blades.
I have those replacement Ultrac sponson blades.