Suede = Yes
Boot lid = $200 - $300
Bonnet = You CAN mod yours but it will cost a fortune and will probably look crap, just try adn find a GTR one even if it is damaged. Your lights will be fine.
Mods =
1. Exhaust (Full from turbo as dump pipe is very restrictive)
2. Filter (In box)
3. Filter (pod with CAI)
4. Bleed valve (not too much)
5. FMIC
6. Bleed valve (to 14psi on stock turbo)
7. Engine management (chip, safc etc)
8. Turbo (VG30 is cheap and good for 220rwkw)
9. TURBO (bigger, ball-bearing)
10. ENGINE MANAGEMENT (Better than prior if you go cheap)
11. Injectors (550cc)
12. Internals, timing etc
The best piece of advice I can offer is get it tuned by someone who knows what they are doing after each major mod or boost increas.