2003 + up to some year had the 2.3L Duratec also... but if a 2002 then it is SPI or Zetec.Check the engine and you should be ok.
05-07 are duratec (04 ST are as well) which use a timing chain and not a timing belt.
00-04 are either SPI (unreliable and drop valves into the engine, avoid unless it's documented to have the new head installed), Ztec (black valve cover, fairly reliable, make sure timing belt was serviced roughly at 80,000, 160,000, etc miles, do water pump while you're in there and tensioners)
There's also SVT motors which are somewhat uncommon and usually demand a premium due to the limited run of SVT cars.
I see a 2002 for sale but I see them all the time in my area, mostly up to model year 2005. Is this a cheap reliable commuter? I'm looking for as close to a corolla as possible without the ricetax. slwo and boring is fine for me