1995 Other Plymouth Models Car will not start no matter what

My 95 Plymouth neon stalled on my way home one day and wouldnt start up. I got it towed to a shop and they have now had it for a month and it still won't start. They replaced the tank and fuel pump and fuel filter. They tried a new throttle position sensor, distributer, throttle body, crank sensors, and replaced the plugs like 4 times. They have great compression, great fuel pressure, and good spark. The timing is perfect also. I also replaced the plugs and wires two weeks before it died. THE DAMN THING STILL WON'T START! I am going to be stuck paying for all this trouble shooting also. Is there anything you can think of that I can suggest to them to get it out of their shop and back in my driveway running? (I would like to add that the shop is the best within 20 miles and they would not bullshit me to run up the cost)