Howdy from a New Guy Jeep help needed

Hey guys, found this site from ScannerDanner's youtube channel trying to figure out my Jeep. Just put a 4.0 stroked to 4.6 and I am getting four codes, P0300, P0304, P0306, and P0740. Replaced the o2s, crank, cam and a few other sensors along with new injectors and spark plugs. Don't really know where to go from here along with the diagnosing route if you all could guide this young Padawan.

Truck drives alright but has a noticeable miss is about all I can feel.

Here is a picture of the old girl. I am just trying to keep it pretty and on the road while beating on it offroad

The p030x codes are related to engine missfire the first thing to do is verify engine compression and vacuum. For compression we don't care about the exact number just that they are all even. When checking engine vacuum were looking for a steady needle not jumping . The p0740 is a transmission code relating to the torque converter

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First of all welcome good to have you here I will move the thread into then problems section where it will get more attention. It would help if you gave a few more details --- eg model year as Jeep made quite a few significant changes over the years.

Sorry, my bad. It is a 2001 Cherokee Classic