Hendrickson HTB LT suspension

[CFR__AND_SONS]

My Prostar came with this suspension on it and now that I need to replace shocks, it is nearly impossible to find them anywhere. I have a part number from Hendrickson but I haven't had luck finding them. One company in the east coast had one shock but it was ridiculously expensive compared to the other brands. I went to the Monroe website and there is a cross reference shock but that is also hard to find.

Same thing with my drums. I have Cenrtifuse Motorwheel drums and they are also very hard to find and close to $300 a pop. I'm just curious to know if anybody who has this same suspension had any issues finding parts for it...