Looks like a sled that gets hauled on an open trail in the salt spray, even the alum is corroded there. I'd try and clean it up for sure.
I used to have an open but only trailered a few times over the past 4 years or so, I purchased an enclosed in January of this year so no more salt for me.
Any good videos or step by step instructions out there?
cnybrian - There are a few videos on Youtube that show clutch kit installations. This should help you