A 36 ounce 18 is very different from a 48 ounce 6" full lug K-22. I love them both but neither is a good substitute for the other.

I would not want to be without a Model 18 or pre-18. However, the dash 3s made in 1977 did not have a gas ring in the cylinder. It was only a year and a half of K frame production that lacked gas rings. That little feature is important to me so I would not pay a high price for a K frame that did not have a gas ring sticking out of the front of its cylinder.