Yes is is still making exhaust. I just got mine from him. When I talked to him on the phone, he said that we was going to be changing his site. I talked with him on the phone and received great service.
I am likely going to go to his exhaust next season and sell my hindle 4-1 - but the hindle 4-1 has grown on me, and apparently it's one of the bigger power makers - so we'll see in the spring how I feel I suppose