since i chose not to have any ac or heat (heat because i live in florida), can i bypass the heater core on the car? the line comming off the back of the head, can i just cap it off, or does the coolant have to run through the heater core? I dont see the point of the extra lines if im not going to have any heat, but if it helps with the cooling system in some way, then i will leave it. Please let me know what you guys think. Either way, i will remove the heater valve on the firewall, just want to know if i should connect the line from the back of the head to the nipple on the firewall, or can i just cap the back of the head off.