1969 CB450 K1 Tank Rubber Sourcing

[bhh1989]

Hey guys, I picked up a steal while buying parts the other day, a candy red tank off a CB450K1. The tank is resto-worthy for sure, and I want to replace the hardened rubber knee pads. The right one is worn out all the way through, while the left is fine but hard. Anybody know where I can find these or does anybody have some? Thanks