Replacement engine when warm starts missing?

Scan for codes first and check fuel pressure with a gauge auto parts rent it. but for misfires it is better for a mechanic to diagnose as it can be a myriad of things so you do not waste money on parts that may not be anything wrong with them. See link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

What are the codes?

Were they P0306, P0356 and/or P0353?

P0306 is not an ignition coil code it is a misfire on number six cylinder, although it could mean the ignition coil is bad if this has a coil on each cylinder (coil on plug).

By skip, do you mean pulsating? Steering whell shake at higher speeds when you brake? Or pedal bouncing? If yes the rotors are warped.

Swap the coil with another cylinder and see if the misfire moves or stays on #6. If it moves then the coil is bad, but if it stays then the coil is fine and something else.

Sensor? Will not give u a misfire
injector will
spark plugs will
wires will
1st step check it for tune up / scan for code s

You have covered much of what can cause a misfire but here are a few things that can also cause a misfire. Does your car have a distributor? If it does than I suggest you change the cap a rotor also. If you don't have a distributor then you have coil packs. The one for the #1 cylinder could be bad. Swap a coil from another cylinder and see if the misfire moves to that cylinder. Poor compression can also cause a misfire. Do a compression test on all cylinders and compare your results to each cylinder. If the car idles poorly check the engine for a intake vacuum leak. This can also cause a misfire