I was looking for a chassis for the 5hp I took off my 69 and came across a guy who had about 30 ariens blowers for parts. He had other brands as well, I felt like I was on american pickers going through all the blowers. I came out with a tractor model#910019 ser# 005935 (a 74 ?) and blower unit model#910995 ser#063194.( a 72 ?) I also found a nice pair of snow hogs my 69. What a fun day.