so here's the deal, im running a 396 with big valve heads, edelbrock alum high rise air gap intake, holley 750 double pumper and mild cam in my 70 1/2 ton. Not to mention a th350 tranny (note:its not an overdrive

) and 3.73's in the back. Im sure this truck is gonna SCREAM at about 70 mph. Does anyone make an electric fan or does anyone know how many cfms its gonna take to cool this thing. I dont think ill have room for a regular fan and clutch along with a electric fan so i really need to be able to just run an electric fan alone......