I have a 1980's blazier k5 but it is a full cab how do i change it to a half cab

does it have a top that can come off?

and by half cab do you mean the top off or a new top that goes ends a little after the front seats??

does it have a top that can come off?

and by half cab do you mean the top off or a new top that goes ends a little after the front seats??

yeah cab ends after seats

if it ends after the front seats then that is a half cab, take the four bolts or so out of the inside of you top where it meets the "bed rails" and go topless.

cut the cab in half with a sawzall and now you have a half cab.

no butif u had a full cab how whould u change it to a half cab

Are you talking about the top for the blazer, or the cab that holds the doors, windshield, tailgate, top, etc.