I need all the white interior plastic molding for a 1975 Cutlass Supreme.

 

Welcome to the site, I moved your post to the parts wanted section.

 

I hate to be the bearer of bad news, but the odds of you finding these pcs in usable condition in white are not much better than winning the lottery. For whatever reason, of all the factory interior colors, white plastic was the most susceptible to dry rot. I have been involved in searching/pulling parts from many dozens of this gen of "A" bodies for nearly two decades and have yet to find more than one or two pcs in white that weren't dry-rotted. It's difficult enough to find good plastic in any color...so, best plan on painting whatever it is you do find. With that said, I do have some pcs I've collected in various colors...and, could maybe help fill in the rest by searching the 12-15 Cutlasses sitting in a couple of yards I often visit. Let me know if interested.

Welcome to the site, btw!