ANDRE CHECK THE BACK SIDE OF THE CYL HEADS AND MAKE CERTAIN THAT THE CAM BORE PLUGS ARE NOT LEAKING AND THAT THE RETAINER PLATES ARE ON THE HEADS , IF YOU ARE GOING TO USE THE SOHC ENG THOSE PLATES ARE A MUST TO KEEP THE PLUGS FROM BLOWING OUT , THEY WERE ALL SUPPOSSED TO BE REPLACED ON ALL EARLY VEH BY A REALL MANY YEARS AGO BUT THERE WERE A FEW THAT SLIPPED THRU , IF THEY ARE NOT THERE LET ME KNOW I HAVE THE DIAGRAMS TO MAKE NEW ONES , I COULD TELL YOU WHO DESIGNED THE ORIGINAL ONES FOR THE SOHC BUT I WON,T ... LET ME KNOW JERRY