IF YOU HAVE THE OLD TROOPER DIST IN THE CAR IT WILL NOT RUN CORRECTLY, BUT IT SHOULDNT HOOK UP THE WIRING HARNESS IS DIFF, UNLESS SOME ONE DID A REWIRE TO MAKE IT TRY AND RUN, IT WILL NOT RUN CORRECTLY, IF THE DIST IS PUSHED ALL THE WAY TO IT,S STOP ONE DIRECTION OR THE OTHER THE TIMING BELT IS ON WRONG, , COULD EASILY HAVE BEEN INSTALLED WRONG EVEN WITH THE MARKS LINED UP, THE LOWER CRANK PULLEY IS NOTORIOUS FOR SLIPPING AN D THROWING THE TIMING MARKS OFF, CLASSIC SYMPTOMS , JERRY