Found it. We've got about 18" of fresh snow so now way to go to the airport to check. However, I found the receipt in my files.
Carb assembly from Progressive air services in Kamloops in 2015 was just over $1000 cd
O/H MA-4SPA
Progressive part # 0-5217-H assembly O/H MA-4SPA
FYI two points
First, my engine is a 160hp and on my logbook its listed as 0-320-(E2C)/D2A
Second, ive always second guessing if I shouldn't have changed it to fuel injected. FWIW