so i have this friend that blew his motor in his grand prix gt with the top end swap and he doesnt know what blew but he siad when he drained the oil it had coolant in it. i think he blew a head gasket. would that ruin the heads, intake and supercharger? the reason i want to know is because he is gonna trade the whole top end of his motor and his stock rims to me for my chrom 18's. i want to know if this is a good idea. i dont want to have to buy new heads if i do this trade.