Just did this last week. I would be driving for about 30 minutes and if I pulled in somewhere and shut down the car it wouldn't start for hours afterwards. One day the pump just stopped working entirely. It would crank and crank and never fire.

I would say its your fuel pump. Autozone/Advanced etc have the drop in assembly for $309. ZZP has the pumps for $125. I bought the kit from them, went home and installed it in less than an hour. Had to talk to Steve and Zoom to get a bug worked out but I have been driving the car for 3 days since install. I'm having a strange long crank symptom right now that wasn't there before but I'm looking into it. I do believe its your fuel pump.