How many hours does it take to do a head gasket kit on 1995 Ford Ranger

To take apart and back together how many hours does it take

Asked by for the 1995 Ford Ranger
what engine ? What experience level and tools do you have or are you just looking for a 'flat-rate time that a shop would charge? Are the head(s) going to a machine shop to be checked and a valve job done?
3.0 just looking for a flat rate and yea machine shoped qnd valves