N14 dropped valve or cracked piston

Was hauling a load of corn to a chicken farmer today and heard a chatter, not loud but noticeable and then lots of smoke and loss of power. Oil pressure was 50psi and coolant temp was 190*. I shut it down in about 1 mile of travel. Popped the hood and noticed lots of oil all over everything. Pulled dip stick and oil was clean but a gallon low. Started it back up and blow by tube was alot of crankcase oil smoke. Checked the two 10amp fuses that run from batteries to ECM and they’re good. Shut it back off and pulled cold and hot side of turbo and lots of oil on both sides. Compressor wheels felt fine, so I’m kinda ruling out a turbo problem. I also pulled the elbow for the turbo pressure side and it had oil in it. I started it again and it blowed lots of oil from the pressures side. There’s lots of oil on the front cover, from the crank pulley up to the accessory drive and just below the water pump. Also notice oil seeping from the rear of the center exhaust manifold, where it connects to the rear manifold. When I shut the engine off it sounds like and air compressor shutting off from the passenger side of the engine. All that said and you guys are experts and I’m not, I’m guessing a dropped valve from middle head or cracked piston?

 

……and I’m assuming the crankcase pressure has possibly blown the front main seal. Dipstick is trying to blow out too.

 

I put a brass plug on the pressure line, supplying oil to the turbo. Still getting oil into turbo. I’m not ruling out the turbo is bad cause I don’t understand how oil could be on both the hot and cold side, along with in the middle(bearings) where it’s supposed to be.

 

I pulled the boot at the intake manifold and no oil had made it that far, luckily or this could’ve burnt the whole sumbeech down. I’m betting there a quart in the A2A though.