Tune up kit?

[AlanS]

Funny, I can't seem to find tune up parts on-line for my 2001 S40. FCP Groton only has spark plugs and wires. No cap or rotor.
Am I missing something here? There is a distributor, isn't there? Where is a good place to p/u parts at a decent price?
That said...what plugs do I get? Seems to be three types.
Car is running rough, I know that it has not had new ignition parts in 20,000miles or so.
So, Plugs, Cap, Rotor, Wires (?)...anything else?

[mbreed]

There is no cap and rotor. Ignition timing is controlled by the ECM.

[zulu-v40]

Inspect the engine coil pack boots on the spark plugs for cracked rubber. If cracked, replace.