Hi Sam, if you can you get to the 996 FAQ section of the forum there is lots of info in there: 996 Model History and Variants 996 MY2002 Facelift: A Summary etc. Lots of things to think about. I used Peter Morgan to source and check mine for me and he kept me from buying anything I hadn't specified originally (when I started getting a bit impatient). [link]http://www.porscheinspections.com/[/link] The main thing for me was condition, service history and colour. The 2002 facelift version gets a 3.6 litre variocam plus engine rather than the 3.4 as well as the Turbo look front wings and headlights. Bhp increased from 300 to 320. Other slight improvements too. The earlier car is still a good car though. One thing to look out for on all 996 models is an oil leak from the Rear Main Seal (RMS) which occurred more frequently on the earlier models. Most will probably have updated seals by now but it can still occur. Pitting on the inner of the brake disks can happen if it is put away in the garage when still wet. The only thing I can find on the 2003 models is below, I'm sure someone will correct me if there is more: --In the summer of 2003 the C4S cabriolet was introduced. On all 2003 cabriolets, the roof could now be raised and lowered at speeds of up to 50km/h (31mph). The structure of the C4S cabriolet was slightly stiffer than the standard cabriolet, with an increased torsional stiffness of 4.5%, and flexural stiffness by 3%. The Carrera C4S was built well into 2005, prior to the release of the997 version. Porsche Communications Management PCM 2.0 was also introduced in 2003-- Do you want 2wd or 4wd, manual or tiptronic? Just a few ideas but don't be put off, I love mine! Good hunting.