Simple answer is no it can't
Yes you can , R35LEE does a swap over service at a price.
In regards to the Nismo exhaust, unless you are a total brand whore, there are better and cheaper options, like a Milltek for about £300 less than a Nismo, which is around the £1200 mark.
Maybe its best that you just get a Zed first and live with it for a bit first and see how it feels to you, and then get yourself to some club meets and see if you feel the urge to mod yours at all.
Cos once you start, it's gonna be hard to stop.
Good to know that the interior can be swapped over. Unfortunately i have been known to be a bit of a brand whore but i would also consider the cheaper options depending on the budget at the time.
I've owned a zed before i had to sell it this time last year after work looked like it was drying up.(never actually did, one of my worse mistakes) It was an 06 Azure Coupe with full nismo kit, GT pack, Sat nav, the lot. Hence why im looking for another facelift. I didn't do any mods but always wanted to change the exhaust and fit lowering springs.