I needed a replacement 72" RD deck shell for my F3060 and still am convinced the Peruzzi flail would be a good choice, except at the time they only had 60" version and also the price difference between just shell vs. whole new (60") flail mower was something like $2000 vs. $4500 or so.
Looks like they now have 72" flail version so I think it comes down to price difference between a complete 72" Kubota deck vs. 72" Peruzzi for $5500 ?
In my case the old deck shell was warped (who knows why?) and worn lower edges due to municipal hired help having ran it it too close to the ground.
I still have the old shell but so far decided not rebuild it due to other priorities.
Here is my 72" RD deck with a new shell:
View attachment 698600