Outer Limits 4x4 Board

hi guys i have an fj45 landcruiser and i need to know what size thermo fan/s i need to run on a standard radiator??? i think its a single 18" or will twin 10"s do the job better??? i know im going to need to make mounts but i want to get the right size first so i dont get cooling problems

thanks guys

Moved to Toyota

ive done this mate. there 2 10inch fans i think. but ive used a commodore v8 radiator for the setup im using. im sure 2 10's would fit. as for brackets, they come with straps that u just feed thru the radiator fins.