The International Cessna^® 170 Association

I got them from Hill aircraft, (cessna.com)

0550155 and 0550154 are standard Cessna parts, available from your local Cessna dealer, or online from http://www.cessnadirect.com (Yingling), http://www.cessnaparts.com (Hill Aircraft), and many others. Those parts are not expensive.

Edit: RIght, what Brad said.

Dave,
Somehow I dropped the "parts" out of cessnaparts.com (I was in a hurry last night) Thanks for straightening out my last post