Oil leak or leaks...?!? Please help

Just got my truck back from Toyota yesterday (they finally switched out my rusty frame!)
and now my check engine light just came on and my truck is spewing oil. we removed the skid plate and I can see where its coming from, but not sure what its gonna cost and exactly what it is.. any help is greatly appreciated.
Thanks in advance...
photos attached

 

I would take it right back to to whoever fixed it, first thing this morning.

 

The dealer will likely claim the engine or one of it's external components was leaking before the frame work.

Venturing a guess, there could be an oil hose/line somewhere that did not get fastened properly, but as Blockhead said, take it back and see where all of this lands.

I guess the frame swap did not include the vertical cross-members I see in the first photo.