Would like some of your oppinions. I bought this p38 4.6 hse with lpg conversion and the head blew so replaced heads and gasket and rad and thermostat to give it a fighting chance. still gets bit hot but not to the point of boiling over. in an ideal world i woulf love to just have a new engine dropped into it for peice of mind then i would keep it but the other half is moaning about the amount of time and money spent on the thing. so my question is should i drop some of that liquid copper stuff in to see if it keeps it cooler to seal any possible cracked blocks and second how much should i flog her for as in the truck not the mrs lol.