To me, the hardest part of keeping an old car on the road is dealing with the rubber parts. As soon as rubber parts are made (including tires) the clock to self-destruction starts counting down. Things like reducing sunlight exposure helps, but the clock keeps running.

Because of the Opel connection, the door window, quarter window, door to body and hatch to body seals are available. The original Opel windshield seal was a grommet style like was used on US cars until they started gluing the windshield. Haven't confirmed, but I believe the Opel style could be used on our Chevettes. The other rubber parts of concern have to do with the steering/suspension. A lot is still available through normal aftermarket. A lot of front suspension is shared with the Fiero. RareParts.com sells everything steering/suspension related except the passenger side power steering rack mount. I have figured out how to use one of there other rack bushings and bond it to the metal rings of the original using two part urethane adhesive.

The Chevettes were/are used in subcompact dirt racing; especially in and around the Tennessee and Kentucky area. Because of this, JEGS sells a roll cage kit.

There may not be the same aftermarket support for the Chevette as for a Camaro. But, the idea that there is no parts availability to keep them running and for making modifications is ridiculous. Just takes a little more understanding and effort.