Not sure how many of you guys out there knew or did business with Mac's pipes, but a close friend is a relative of Mac. He informed me that He passed away the other week. Many of the header mufflers and header pipes I have were from him. Not much chance of any of the family members trying to keep the business going from what I was told. He was always very helpful and just up the street from me. Another loss to model aviation and of course the model race cars and boats that raced with his product installed.