As a follow-up to my issues. I put everything back together and it ran fine again, for a couple of tanks of fuel. I added seafoam the first tank and BG44 the second. The next tank was premium only and my misfire immediately returned. I pulled the codes and again it was 1,3,5,7 misfire. I pulled the trigger and bought 4 bosch injectors from eeuroparts.com along with thew clips.
https://www.eeuroparts.com/Parts/187708/Fuel-Injector-0261500298/
I already had the battery tray and heat shields removed from the previous work. I waited to reinstall them, glad I did. It only took 1.5 hours. I used a similar method to pull the rail as others using a jack. I also used the injector puller to pull and reseat the injectors. Pretty easy, max ten pulls to get them off.
Runs great now. Acceleration is back. It always felt like the clutch was slipping under hard acceleration and all along it was misfiring, but not enough to throw a code. Glad I found this forum. All in all, I replaced my coolant pump, radiator, radiator hoses, thermostat, front and rear crossover tubes, cleaned my intake, intake vales, changed plugs, changed 4 injectors.
Now I have an oil leak...