Does anyone know the part numbers for the 1970 washer fluid monitor and sender, 1970 underhood light, and 1970 small block 350/300HP 4bbl Rochester intake manifold? Thanks!!

I don't know the Intake part number, but the casting number is 3965577. The part number probably isn't that important anymore since you can't buy new ones from GM.
The underhood lamp appears to be the same one used in GM rear wheel cars until at least 1985.