We have a source for clean grain elevator boots for M3 L3 R40 R50 and early R 42's 52 's part # 71343989 , it is not oem but will work fine. It does not have any holes drilled, you install and drill and bolt or rivet as go and move to non torn holes in galvanized if needed. It does have the door but no liner. The old latch and u bolt will have to be reused - $450 includes shipping about anywhere in NA.

Agco has these non current parts outsourced and cannot get a bidder for low quantity any better than what they have - dealer list is now $730.00 Will take a week or so for delivery. Just a service if it will help . Will post a picture later if any interest for the older machines.