That clutch looks just like the clutch on my Howse, although the friction linings are different. I got replacement linings from Ken Sweet and fit perfectly. They were listed as
6 1/2 x 2 1/2 x 1/8" but were actually 6 x 2 5/8 x 1/8" which was just what I was looking for. I wonder if the brass pieces were spacers to hold the linings centered?
Howse's site only listed the driveline complete for $272. No separate parts for the clutch. I tried contacting Howse via their e-mail twice and got no response. Why does a company list contact information and then ignore it? Anyway, measure you're clutch and see if those would work for you too. Sweet Tractors part #7805. 1-270-528-3323. Hope that helps.
Kim