1996 GMC Sierra cranks but wont start.

Ok I have a 1996 gmc sierra 4.3 v6 2wd 187.000 miles. It started acting up about 2 weeks ago. In the morning when id head to work it would sputter and die and then start running fine and would be ok for the rest of the day. It started getting worse to the point that it dosnt start anymore. It cranks but dosnt turn over. It would only sputter and have problems when accelerating but would idle fine so I dont suspect any vaccum problems. I had the computer checked and had a random misfire code. I get 60 psi for fuel pressure and you can smell gas at the exaust pipe when cranking it so im getting gas just no spark. I had the ignition module check and that was fine. I replaced the distrubuter cap and rotar, and checked the coil with a ohm meter and it was fine. Where should I go next? Crank shaft position sensor? Im hoping I dont have to replace the hole distributor