the comment about stage 2 made before is not completely correct. i have stage two and it does not require 93 octane to work. that is just what is recomended. and for coyote.... where did you get the 3.93 L-S rear?

 

i have some questions about thermostats. i have seen some aftermarket lowtemp thermostats out there for 160, 180, and 195 degrees. would i need to replace the factory thermostat with one of these even if i were going to add an electric fan?