Parts value??

[Tdr3155]

I have a bunch original GM Camaro parts I am selling for my dad, what is the best way to value this stuff? I'm not looking to get rich just want a fair price. I would love to sell it to someone who will use it rather than someone who will mark it up and resell it....but either way I have:
67 Holley 3910 762 date
67 pace car 12 bolt housing with traction bar (square bar)
Two 67 375/396 intakes one really nice the other has been worked on internally.
70 muncie 4 speed from a SS Nova I believe an M20
67 pace car front brake assemblys calipers, rotors and spindles
69 COPO front brake rotors and calipers that are in excellent shape.
That's what I have gotten out so far, all are surviver parts in original condition, not restored. if I can price this stuff I will list in the parts for sale section on here. I have searched Ebay for this stuff but cant find most of it and some things I have found seem like unrealistic prices.