FZRSupport: the FZROnline Archive

Does anyone know how i can find out what an engine is too with the numbers off the block?
I know it is a suzuki and i am thinking a gsxr 600 or something but not sure
The numbers are
N723-141827

Found these 2 with a quick google search GOOGLE IS YOUR FRIEND
Note the engine number in discription item has fininshed but your not buying anway.
http://cgi.ebay.com.au/SUZUKI-GSXR600-G ... 35a4067cc4

and this
http://wiki.answers.com/Q/What_model_an ... 723-151625