The long plastic b-pillar covers that go from sill plate to headliner. I'm figuring out these must be different for my 78 Olds Salon. I had scored some nice ones from an 85 Monte Carlo. I just mocked them up and they don't have the right curve. I might could heat gun them but what the heck am I going to do now? I'm assuming this must be a 78-80 part only????