Does anyone know where I can get blueprints of the bike, engine maybe?

Thanks

You can see a basic explosion here. (http://www.bikebandit.com/partsbandit/oem-nav~submit_from_stage~4~section_dept_id~1~model_de pt_mfr~Honda~model_dept_year~2004~model_dept_id~11 32616.asp)

But if you're looking for specs you'll need to buy a manual. You should be able to order one through your dealer.

If you get a manual through your dealer you're gonna pay around $60. I got one on ebay for around $20. They are on there all the time, just keep an eye out for them.