Misfire and backfire in exhaust after hitting bump

I hit a rough bump on the street while accelerating in my 97 vortec Suburban. It almost immediatley began running rough. After running/sitting in the driveway, it wouldn’t even fire up. It threw misfire cylinders 5 & 7 and left bank O2 sensor. I replaced the fuel filter, it was nearly all the way clogged. Now it starts and idles smooth but has a rough engine acceleration and stubles and backfires lightly in the exhaust at around 2-2.5K RPM’s…It throws code P0300 now and live data indicates MAF is working, coolant sensor working. I donr know how to read alot of it, what should I be looking for. Ignition system isn’t really susspect but not being ruled out. This happen during a sudden jar so I think it migh have sucked up dirt of clogged the pump sock. I replaced the fuel pump in 2016 with an inexpesive one. I didnt take a fuel reading then but today it has 60psi engine off/55 engine running and 90 when the return line is pinched off. Pressure leaks back down to 55 when I turn the engine off and it runns VERY rich with the return line pinched shut. This is the spider injection beneath the manifold so either end requires money and effort.The plug wire are firmly seated and it was running good before the jolt. I have storred the live data in the scanner. Just looking for the most logical place to start. I really need to have this running, any though’s or suggestions would be greatly appreciated. Below are photo’s of the live data test results. Please,take a look if anything stands out. I have been researching it and all those values seem pretty normal.