My troubleshooting technique is really terrible. After replacing both the in tank fuel pump and main pump I found out they were not even the cause of the hesitation under load. Turns out that there was carbon all over the place in the distributor cap. I just replaced the cap, rotor, and plugs less than 10k miles ago. The gap on the plugs was a little over .35, so I regapped them to .32-.35 just in case that was causing a little problem. After cleaning up the cap the car runs fine again. I'll sell the used pumps if someone wants em. Make an offer. The main pump was stamped with a 95 and the transfer pump stamped with 99 in case you are interested.
