2002 Ford F-150 Supercrew

I have a 2002 F150 Lariat with a newer motor, Transmission, tires, brakes, power steering pump, oil pump, intake manifold, cold air intake, AC compressor, U bolts, plus thousands more. It has one issue, and it may not be much of an issue, but it may. It has a misfire in cylinder 6, i believe, and it could be a plug and coil pack, or it could be something else. I can not say for sure, but it will need to be addressed. I have at least 25 thousand worth of money in this truck, and I know that doesn'tmean much, but it's true. Body and suspension have 265 thousand on them, but the motor and all new parts have around 28 thousand.