Lower mouth pipe length and diameter

[Zypher]

I must replace a pinched lower mouth pipe on my Hoton 122 sousaphone. It's the classic damage right below the receiver. Without the being able to find Holton spare parts, I must resort to other manufacturers.

I see a lot of King and Conn options out there. How do I find the closest option?

Zypher

[aqualung]

Eddie at Badger makes Holton pipes. Upper and lower.

[Zypher]

The pipe is torn where the brace is attached under the receiver. My Holton is different than the picture above. Think that one is from the 20s while mine is mid 40s. My lower mouth pipe extends more laterally and is anchored to the main branch before rising.