I have not seen any of them aftermarket. Those parts have to be removed from the axle to be able to remove the ball. Clean them up and you will probably find that they are OK. They are solid components and the only wear area is the ball. Unless they have been damaged in a wreck. The new type tie rods are a big improvement.
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