G'day Gosling,
Thanks for the welcome mate

I think the main reason why I bought the GPZ750R (its the watercooled version) was price and condition. Its low K, and the price was very reasonable. I was hoping there was a high parts compatibility with the 900R, Bonester thought this was so as well, I'm glad you verified it, will make parts less of a concern.
I've bought the bike as a ridey initially, I run a lot of K's commuting to work and need a good solid bike. The power will be ok (92hp is a whole lot more than the 40 I have with the KLR at the moment

). Eventually though I'd like to make a bit of a project bike out of it, Bonester and my cousin suggested I slot a 908 motor in it.....

This is my cousins dragbike, its a Jap home market Z750 with a Z1B motor in it (1232cc kit in it). It runs regular 11.2's at Willowbank at 120MPH (or so).
I'd like to do a similar thing with the GPZ, make a project bike out of it, get an old GPZ900R and use it as a donor bike for motor etc, (17" wheels and 4 pot brakes off a later model would be cool too!).
I suppose at the end of the day its my heart that made the decision, the GPZ was king during my formative years, the 750R was available at the right price, plus it will give me something to do with my time....