The yellow tub is scrap metal for the Boy Scout troop. The scrap fan clutch and old water pump are going over to a machine shop with a 1993 454 water pump to retrofit it to use a diesel fan and clutch. (Project cold AC on the 454.)
Note the two clutches left and center are Old style KD low temp clutch and the center is a brand new 2015 KD low temp clutch. Looks like a supplier change for KD.
The one on the right is a 6 bolt. The company that makes that fin pattern is Torqflo. The other two look like Hayden is making them for him. We do know he is having them made to his spec- not an off the shelf clutch.