most of thie differences on the JDM are listed here
http://www.350z-uk.com/forum/viewforum.php?f=37
A good place to start getting info on aftermarket parts is here.
http://www.350z-tech.com/zwiki/Nissan_3 ... rket_parts
And of course there is plenty of advice here concernig mods. There will be plenty of help once you start your shopping list.
Nice looking motor by the way
If you are going to be doing a lot of modding I would consider getting a JDM. Seeing as you'll be changing a lot of parts the saving over a UK model is a advantage.
to the site by the way.
Tonight at 6.15. Had a little wave to each other. I handed the guy who was busy on the phone a spotted flyer.
Fingers crossed he joins up and enjoys this forum.