I'm rebuilding my 7M-GE Auto engine and not sure what coolant to use. I'm going to install a new stock radiator (if I can find one) or new aluminum. Along with silicone coolant hoses for longevity, OEM clutch fan and if need be a transmission cooler if I go aluminum. I've heard so many answers like use Toyota pink coolant super long life, Toyota Red 50/50 mix, and Green coolant 50/50 mix. My Supra will be driven frequently once it's all said and done, street use only (mainly highway) and I also live in California. If the machine shop doesn't take too much off the block resurface, I may end up using new OEM head gasket. Any idea what coolant to put in?