firedevl23

I am working on a friend of mine's 1993 camaro with the 3.4 L V-6. I have changed the plugs and wires on it. It miss fires at low rpms. I am thinking it is the crankshaft position sensor or the camshaft position sensor. If you guys can give me any insight to this i would appreciate it. if possible i would also like a description of where these to parts are located on the engine so i can find them, test them and fix them.