What's this...and where can I find more!

I'm working on my new to me 1985 Turtle Mtn M105a2. And I notice I'm missing one of the rear shackle? assemblies. Here's a picture.
I'm also looking for bows and front landing leg assembly. I'm open to sugestions.
Thanks Mike Bogner

The M105 bows are the same as the M101 current metal bows, you just put the cross piece at the longer position. I'd call Saturn to see if they have the parts you need, or maybe someone on here might have one for ya. Front landing legs are on ebay from time to time.... You'll need 5 bows. Do you have a top for it?