I'd take a close look at the trans/motor mounts as well to make sure nothing is causing excessive twisting

Hey guy’* thanks for the help and advise..

The first thing I checked after removing the down pipe was the coils and wires since I’m familiar with this problem after having two coils going bad on me one after a other. I did replace all three at once with MSD coils, did not want to wait for the other coil to go bad. I wonder if the MSD'* have warranty. Anyway I never reinstalled the cracked down pipe since it could not be fixed ..So I can't start the car to check.
I should be getting the down pipe by the end of the week and I'll keep you all posted.
Thanks again.

Ok... I installed the down pipe from Hogan performance. I can hear the difference! Sounds strong!
Well, for the cylinder #1 misfire it was still there. My coil went bad, the way I tested was swapping the 1&4 coil with 2&5 coil. I erased the code and started the car again, still had rough idle plugged in the reader and there it was cylinder #5 misfire. I wonder if the air leak caused a coil to go bad or just coincidence. I did drive it 19 miles home with a cracked flex pipe. These MSD coils are maybe a year old. However, I put my old Gm coil in and it is running fine now.

I doubt the cracked DP caused the coil to fail. Some times they just go bad.