[hockey44]

I am somewhat doubtful if I have a Boss head as told. Is there anyway that one can visually see if my heads are Boss without removing valve covers etc. I know it is a 4V and that it is a 4 bolt main bearing. I am dubious if this is a Boss set-up and help appreciated. I was told the block was originally a longblock- does this effect whether it could have been originally a Boss block (and crank- high nodular iron) and heads? thanks, Ed