1953 Model 60 Clutch Lever Pivot Bolt

I would like to replace the clutch lever pivot bolt and bushing on my tractor as there is a lot of play in the clutch lever.

However, my tractor has a cast iron piece (G754 A) next to the clutch lever that uses the pivot bolt to hold it on. I think it is used when pulling a drawbar type plow or other implement. When the implement hits an obstruction, the cast iron piece jerks the clutch back and prevents anything from breaking (with the exception of your left knee I imagine).

Is this piece really held on with the pivot bolt as it appears? If so, where do I buy a 10.5 inch pivot bolt? Any idea what the part number of this long bolt is? Finally, what specifically did this cast iron piece come with? Was it with an imlement, bought at the dealer, or rigged in the field by the farmer from another tractor?

Thanks as always for your help.

Matt