['68OrangeSunshine]

I've bought stuff from them.
Quality OK. Prices not exhorbitant. Good turnaround.
They have even sent me stuff I forgot I never got, many months later.
What I really like is Truck + Car Shops of Orange CAL often has small items that LMC and Brothers just don't carry. Little things, especially in the '67 - '68 range, where some plants might be using the latest [pre-'69 stuff], and other plants are using up the '67 stuff.
Steering column parts, for instance. Their catalog is ranged '60 - '72, so you can look at the evolution of that system.
They Do have the shorter Horn Cup under-the-horn-button for the '67 - '68s. And the Horn Cap rubber collar.
While they may not have the all-black plastic Standard Dash Knobs, Truck Shop is the first place I'd look. LMC would just have you go large and get all new Deluxe knobs with the center chrome dot.
Good outfit.
I'd buy from them again.