I used the 16" 3K CFM from perma cool with no issues you strap the 10amp 170° switch to the water neck & TRD 165° thermastat + Koyo 55mm core radiator.
I kept the JZA70 shroud didnt need a relay because the amp ratting of the fan and switch Combo
The only fir issue with the permacool is you have to add around 1/2" stand offs to the base of the E-Fan otherwise the blades are too close to the radiator.
E-Fan
http://www.summitracing.com/parts/PRM-19115/?image=large
Switch to use with out needing a relay
http://www.summitracing.com/parts/PRM-19003/
I kept the JZA70 shroud didnt need a relay because the amp ratting of the fan and switch Combo
The only fir issue with the permacool is you have to add around 1/2" stand offs to the base of the E-Fan otherwise the blades are too close to the radiator.
E-Fan
http://www.summitracing.com/parts/PRM-19115/?image=large
Switch to use with out needing a relay
http://www.summitracing.com/parts/PRM-19003/