you will need to remover the starter from to get to the rear plugs and remove to alternator to get to the front plugs. not really any other way unless you have very small hands and tools.
.060 is the specified gap setting on spark plugs for a 2000 camaro rs.
sounds more like ignition problem. plugs, wires or distributor maybe.
0.35
Yes
Yes.
1993-1997
In between the exhaust manifolds. You'll need thin fingers - it ain't easy to remove them.
Yes
Yes.
Yes
.054
3 of the plugs are on top of the mottor and 3 of them are on the bottom side