i have a 4.7l and i have a code p0300 (misfiring in random cylinders) i was gonna change the plug becuase it seemed easy at the time becasue it is coil over system, but this isnt easy at all is there any trick to this? they are very difficult to get to seems like you have to take alot of part, (Bad Enginering)

 

At first glance it may look discouraging, but it really is not that badof a job.Just go slow and be carefull. Make sure to use an air compressorto blowout anydirt from around the plugs before removing them.
Dan