Looking for good parts sources

Hi, I'm new here... this is my first MOPAR build in 25 years. My last one was a 70 Cuda that went to a good home when it became worth as much as my house.
This time, I'm doing a 67 Valiant base. The car is rough, and needs a lot of TLC. I'm going to need exterior trim parts like window moldings, weatherstripping, etc. I see Year One has some stuff and so does a couple of other popular suppliers. Are these the go to places for people "in the know"? Or are there alternative sources for some of the hard to find stuff? It's tough to fork out 400 bucks for rear window moldings!

I'm also interested in recommended sources for a back half kit, wheel tubs, 4-link, K member replacements, etc. I'm familiar with the QA1, Magnum Force, US Cartool and the Reilly stuff.

Sorry if this is the wrong place to ask, but I figured I'd give it a shot.

Thanks in advance, I'm here to learn form the experts.
Garry