Hey, I'm preping to rebuild the head gasket on this supra i just bought for 800. heres the the thing, seems to chug gas and the other night it was blowing grey smoke, i know thats bunning coolant, but i fired it up and drove it around a bit today and not even a puff of smoke? not missing, not overheating, i'm dumb founded. and does any one know hoe to get power to the power antenna with an after market deck, p/o had all the wires messed, i've been pulling all the electronics and fixing them. Thanx,...