What do you think bad coil?

[teryglenn1]

Hello i have a 97 Ford Tarus SHO recently welded by Kirk. I just pulled an error code that said cylinder 5 was misfiring. Also when i drive it feels like something is tugging on my rear bumper. Its kinda hard to describe but it doesnt feel right.
Anyways do you think this could be coil related?

 

[SHOWHAT9]

If the code you pulled was P305 then most likely you have a coil misfire.