Steve- I like to give referrals to guys I had good dealings with.
I did think the doors might be different with the wing windows but it just does not show enough in the Body manual. I read some place that wing windows were available on the GP in 68 but never found that to be true.
The door inside door handle is 68 only, and specific to the GP and Bonnevilles.
I love the 68 GP but it is a bear to find parts when needed.