Since nobody spoke up in my "burned Cat parts" post a month or so ago where I said I was looking for persons who I had promised parts to before the Park Fire took many of my Cat parts. Nobody spoke up so they are still for sale: 1) Clutch Collar 3B8576. It is apparently for an early D6. Apparently the last one such sold many years ago on the net. NOS. 2) Clutch Collar 1A2583. It is way smaller than clutch collar listed above (4in. or so in dia.) and it has a small oil cup on it's top. Looks way old but nice shape. 3) Sprocket/shaft 6B8933. It Iooks old and it must weigh 40 lbs. 4) Pony Motor head 4B3550.