Sunroof for 73 scamp

My car seems to have everything for the sunroof but the plastic rolling sliders.

Sunroof semi worked when i bought it last year ... the top blew off going down the highway one day. Was able to recover the top with little to no damage but those clips breaking.

Any help in finding parts would be great ... im willing to buy a entire unit if need be to get the car back to 100%.

Zack
Rohnert Park CA, 94928

missed out on a entire unit that was going around 300-400$


Thanks for your help