2000 d6r xl with 11`-8 blade and 30`` pads

Hello I`m new to the site,but been reading alot of good information here.Got a question I have a 2000 D6R XL with wider blade and shoes it has the custom product badge on the nose.I`ve read here about a gentleman who had a d6r xw that the serial number registered it to be a xl machine.Mine has a 5ln number and a z stamped at the lower right corner of the id tag. Does anybody know what i have?And what the Z stands for thanks

2000 d6r xl with 11`-8 blade and 30`` pads