Is this possible? Wouldnt you just unhook the first relay and run the fan off of the a/c thermal switch with the turn on temp lowered? BUT....if I wanted to stay dual..would a dual fan setup from Derale mount to a GTA? Dual 13" motors pulling 4000cfm, 50 amp draw with two sizes, 31.75Wx15.76T and 28.25Wx13.82T. only problem so far it seems its that the whole setup at the most is 3.19" thick.