94 F150 302 HO will not start

[pooze]

I have a 91' mustang 302 HO in my pickup, which is a 5 speed manual with dual tanks. The symptoms are as follows:

For the past 2 weeks the truck has been acting up. At first, it would randmoly not start. Seemed to be worse if I let it sit overnight, but then it got to the point anytime I shut it off it may or may not start. To get around this I'd let the fuel pump run (key on) for 5 minutes then keep cranking, eventually it would go. I also experienced a strange problem last week, I was climbing a hill and the truck started to bog down and lose power (but ran still ran smooth). It eventually died--I replaced the ignition coil and it started back up and ran fine . I thought that was the problem, but as of yesterday it won't start at all, period. Strange thing is, it was starting fine the day before that.

So far, I replaced the ignition coil (again), figured it might be a fuel pressure problem so I replaced the fuel pressure regulator with a new one, after both of those didn't work I put a new TFI module on the distributor--that also didn't help and then after cranking it so much my starter died, so I replaced that with a new one too.

Right now I have no clue what would be causing the vehicle to not start. Also, when it did start before it ran totally fine, so I don't think it's a problem with ignition necessarily or fuel pressure (both pumps in each tank work fine and there is no high pressure pump on this truck). This also leads me to believe that the computer is ok. I also checked fuses and whatnot and everything checks out as far as I can see.

Any ideas?