I also prefer cars stock; and some factory bodykits. I would go for factory wheels as well; usually there is enough scope for some nice wheels, if not the most outlandish - but that suits me, understated rather than loud.

Performance wise, I would also rather buy a better engined model than do aftermarket upgrades.

However, as with others, I think that many Japanese cars do seem to lend themselves to modification. In a way, perhaps it's because it's virtually a mainstream part of the Japanese auto culture. I still prefer stock for insurance and warranty issues, but I don't consider it desecration, whereas I think that aftermarket modification of a European car is rather a desecration.

I agree with most here and would rather have no mods when it comes to increasing performance in Euopean cars.
The Germans especially makes vehicles which have 'enough' power as it is. You don't even have to look at M, AMG, S/RS to see large horsepower figures, just look at cars such as the 550i and E500 which have ample power. Sure it may not be as awesome as their performance siblings...but in terms of performance, I really don't think there is a need for any mods.
Now, in that previous sentence I said 'need'...but still, some want more power. I guess it's the "mine's bigger than yours" complex when it comes to performance and horsepower.

Ofcourse I'd love a Kleeman CL with an extra 127hp on-top of the already 612hp it had prior to the ECU update.....but I don't think I'd need that extra modification.

So, no mods for me... I quite like my cars stock.

i'd like to have my cars stock, nothin beats the purity of an original design as it was intende by herr spielshemeister the engineer, all things being equal though, i would mod low level and enty models to gte mroe out of them for chaper than the higher model
i would mod a 320 for example to get 325 performance for less money
but i would never consider modding real models, like Ms or cars withengines bigger than 3.0 liters