Received my 225 Slant 6 back from the machine shop,where I work at.Everything looks good and using the original head.I got this for free and saved it from going in the scrap pile from a junkyard I go to for used parts.Took the head which hardened valve seats were installed.Had the original soft valve seats.It included the crank,block and pistons.I now have to put it back together and always been a great fan of this engine.Could not kill it and ran forever.I am putting this one in a 1968 Dodge Dart which came with the slant six which was gone.I can put the bottom end back together in so far.My other parts are on order.I am using the big block rear main seal,say this does cure the rear main seal problems.This is my first one I am building up for high performance