Bucket needs straightened, I do that here but I haven't a clue where you live at and if I were you, I'd replace the light duty material bucket with a real excavation double bottomed bucket anyway. You will be much happier. I have both but I use the HD bucket 95% of the time.
Your ROPS needs replaced with a new one, straightening it will weaken it and I'd say it saved your arse so replace it. The filler cap for the transmission needs replaced and loose the pipe you have in it. Just an entrance for crud and all Kubota transmissions are vented from the factory, no exceptions on that score. Foot plate, shifter and probably the seat and base (which you can buy aftermarket from Seats, Inc) for a lot less.
If it was mine, I'd give it a bath (cover the crack) before doing anything as it's filthy and all that crud will find it's way inside. If not a bath, blow as much off as you can with an air hose. My tractors never get that dirty but ten I'm me and not you. Clean tractors work better and run cooler. Finally the grill and exhaust stack. The grill will be OEM unless you can find one in salvage but most are dented like yours and the exhaust stack you can find at TSC or your local Midas muffler shop or anyone that replaces exhausts. The hood will also be OEM or salvage if you don't mind dents. I do. Had the hood on my open station repaired (dents removed and painted Kubota Orange at a local body shop for 200 bucks. Like I said the previous owner must have rolled something out of the bucket onto the hood and it destroyed the grill at the same time. Nothing is cheap today, especially OEM stuff. My grill cost me more than the hood fix, quite a bit more actually. I put north of 4 grand in my open station to get it looking like it does today and I still need to line bore and plasma cut the bucket linkage bars as well as replace all the fulcrum pins which I can machine here in the shop myself from alloy steel bar. I have to pay for the steel but the labor is all mine.
