Stock oil pan and HV oil pump?

Didnt know that, well could I just elongate the holes in the stock 340 windage tray to fit the 360 mains? Because I was having alot of trouble finding the mopar performance ones in a reasonable amount of time.

I think that is all the factory did. I do not think I have any 360 or the Mopar Performance windage trays left to check. I'd slot both sides out to keep it centered. Have you tried your windage try to see if it fits yet?