Power-Dyne Rail Chopper

I just picked up a Power-Dyne Galaxy Chopper, what year did they make these? I need a Mesinger seat for it, anybody have one they are not in love with? Also need a chain guard or at least a pattern, any help would really be appreciated. Thanks
The seats pop up on eBay periodically and are usually spelled incorrectly. Search both ways. As for production, I'm guessing around 1971-2. I think [MENTION=5969]markus[/MENTION] may have some info on them? I've never seen a guard on a chopper yet, but there is a member with a survivor Powerdyne and guard. Maybe he will chime in with photos. It's just a simple 90 degree basic guard.

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