LA Engine bolt sizes and count.

Hey guys I have decided that I want to replace all the bolts with new ones on my engine but I'm not paying premium prices for a kit so I figured I'd just buy them loose at the hardware store. Plus I like helping out the old guy at the local hardware store. He is cool guy and I really enjoy talking with him. But anyway I need some help formulating a list here is what I have so far
Valve covers 10x 1/4-20 length?
Oil pan 18x 5/16-20 length?
Intake manifold 12x 3/8-16 length?
Headers ? I cant find the size on them
Water pump/timing cover 11x 3/8-16 they are a variety of lengths I remember that much.
Fuel pump 2×3/8-16 length?
Oil pump 3/8-16 quantity and length?
Alternator?
Water pump to fan clutch?
Distributor bolt down?
Crank pully ?
Am I missing any? Thanks guys