I will definitely look into reproducing the GT-37 decal. The same decal (P/N 483376) was used on the trunklid.
Your door panels look to be correct for '70, but appear to be ones for the extra-cost trim level
(249). That would explain why they are Black. Your trim tag shows Gold
(232).
Here's a shot from the
1970 Colors & Interiors booklet:
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1971 GT-37 - 350/M38, Rosewood Metallic/Black
www.GT-37.org