berger said:You can mount the OEM fan for the 06's if you run an 06 tank and kickstart lever. You can run one of the 4 gallon BOSS tanks as well instad of the OEM tank.
Several people have fabbed computer case fans as well.
nsman said:The OEM fan will go on the 04-05 as well,goes on the back of the LH side of the rad and you need to use a manual on/off switch