Thank you so much for your input!
On the dust shield speculation I found this for you
http://www.ka24development.com/brake_upgrades.html
But I'm sure thats the front hub; so heres a number I found on wikibooks
"J30/Q45 - 11" vented rotor, larger single piston caliper, drum handbrake"
"11.75" vented rotor, 2-piston caliper, drum handbrake"
Thickness of rotors are hopefully in first link.
Now that both my answers are answered, I know what I'm gonna do now.