Ok, First off the Z came out in 03.
03s had a non removable grab bar
03-04 had crappy front shocks Find some 05 and up
05-08 ran a different CDI plug
03-09 are know for a weak spot on the frame right above the shocks
05-08 is unchanged
09 have LTR450 styling and EFI
Somewhere in there they changed the carb models from a BSR36 to a BSR37, I think it was 05.
You can build them to roughly a really mean 510cc big bore Shee eater (for latter)
I have an 04 and love it, The man child would be a great fit on a Z.
IMO I would not trade even based on how stock the Z is compared to the Shee.
The Z has nerfs bumpers and an exhaust, Big deal. Bide your time and dont rush it. Or you can put the Shee back to a stock like setting via Ebay and make some cash too.
1987 Honda 200X 90% way through frame up.
1987 CR500R Motor, Soon to be a 540 ATC motor
1986 250R frame, For now
2008 Honda 700XX
2004 KFX700 Torque monster!
2011 Can-Am Commander 1000X
Looking for misc Liquid R parts