250 Exhaust/Intake Manifold hardware

[MWHurt]

I'm looking for new mounting hardware for my intake and exhaust manifolds. I've got a 67 c-10 with a 250 (non-integrated cylinder head) and 3 speed Saginaw. I've searched the typical parts stores and I get some very confused looks from the children working there when I tell them I've got a 250. Does anyone know a good resource to identify the exact hardware that's on it before I have to take my daily driver apart and buy the hardware individually? I'd like to have them all on hand before I re-seal this thing. Thanks!