georgie, your 67 would have come with black wheels and no caps originally (just like the 68 pictured below) - which looks great, but so do the custom approaches you describe. At the end of the day it's all about what looks best to you

. Also note that GM never made white caps for Ks either - but some members offer center removal to fit over the locking hub. I only mention these things in case your goal is originality - but for a custom or upgrade look, the sky's the limit! I too like k10 steppers with white steelies, but if I
EVER end up with one in the driveway, I'm gonna have to go black and capless

! Love your k10 stepper, very nice truck.