1994 Dodge Caravan 1994 Caravan please help

1994 Dodge Caravan 6 cyl Two Wheel Drive Automatic

OK so the van starts fine and runs great until the engine warms up. Then it starts chugging and dies. Sometimes it will start right back up and sometimes it wont restart until it cools back down.I have the 3.0L 4 speed and was told that the problem was probably my crankshaft position sensor. The only problem is that according to the chiltons and haynes manuals this particualr engine doesnt have one.I am at a complete loss. We have replaced the throttle body sensor, EGR valve, fuel filter, coolant temp sensor and the only thing left that really fits the symptoms is crankshaft sensor. Does anyone out there know for sure if this engine does indeed have one and where it is (we were told in the tranny bellhousing) we need to know if it is in there before we go through the hassle of disassembling everything in there just to find its not there. Please someone help me I have been without transportation for me and my kids for too long and really need this solved. Thanks