Welcome from Alabama.
The seat may not be a org seat from looking at the one picture, may need to post a few more of it.
Here is one of the last post I could think of for the trim. I got the the set of burb glass from him, but did not need the trim. I think he had the whole set, but not sure if he will split it up. May reply to post or send a PM.
http://67-72chevytrucks.com/vboard/s....php3?t=115815
Also may send a PM to Tim Christian or give him a call 1-877-654-2287 . I had seen a post were he had some trim also, but could not find the post, to know if he sold it.
I have got parts from both and would do so again.