yup, ive got a 00 maxima 5 spd, no speed mods yet but its real quick for stock. the only thing that sucks is wheel hop since its front wheel drive but limited slip is now an option on em.
just for a lil info...the 00-01 are VQ30DE and 02-03 are VQ35DE, there isnt a mass amount of aftermarket support but theres enough for what most people want to do with their cars. yes stillen makes a custom supercharger kit for 00-01 and there is a company that just came out with a turbo kit for the 02-03. of course there are all the basics...headers, intake, exhaust.
and in terms of mods...theres a guy in orlando with an 02 who runs a 13.8 NA and who plans to turbo it, so yeah u can make em damn quick for a V6 FWD family sedan.
hit me up on AIM at kpr10is if u have any questions
-Kevin