ZXR with ZX9 motor questions

[parto]

Thinking about putting a 900 motor in my J2 ZXR 750

What is the easiest ZX9 motor to put in?

Do i use my Carbs and airbox?

what do i need to modify or change?

Cheers

[LT]

Check out this website

http://homepage.ntlworld.com/webzxr/zxr750r/index.html