My 7.3 pick up seems to run ok, does not overheat and does not smoke. I barely add anti freeze but my rh head has 0 compression in all of the cylinders. uses a lot of oil,I live in Fl, any idea what it should cost to install new head on my truck and does this sound possible? /2002 7.3 I would also like an idea what it would cost to replace the engine with a used engine? Thanks in advance.