The drums are riveted from the factory. If a new drum is required the rivets can be ground off and the new drum installed It is not necessary to replace the rivets. The drums are the same front and rear.
There are replacement tie rod ends and the connecting rods available from most of the aftermarket suppliers, Brothers, Truck Shop, Carter, etc.
I'm not aware of any kits for heim joints.
The steering components for 3100 and 3200 series are the same for 55-2 through 59.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine