Is there any company that reproduces the trim clips for a 1967 Dart GT ?

Those look an awful lot like the Cuda belt trim clips... The ones Classic sell for the cuda suck... The ones Tom @ R/T Specialties sells are excellent..

1000019 BODY MOULDING CLIP SET 70 CUDA BELT TRIM, BODY, 1000019 :Mopar Fasteners, Clips & Hardware

I would call Tom & discuss it with him...