I got a 78 318 put of a Chrysler Lebaron that I'm freshening up for my 67 Dart. I noticed when I took it a part it did not have a windage tray in it and the main cap bolts do not have that part on the head to bolt a tray in. I noticed someone had been inside that engine before it has .040 pistons. Could that engine have came from the factory with out one? Or who ever rebuilt it before removed it. I understand what the tray dose for the oil and since this is going to be just a stock rebuild and be a highway cruiser and nothing crazy would it really be worth getting one? I can find a tray easy but what about the main cap bolts that the tray bolts thread into where would I find those?