Connecting Rod Mystery

I've looked through alot of these rods- The casting number is the same for a boring old 360/318 as the hi-po floating 340's, the only difference is the 340's are bushed. I've never seen a 318 with factory bushed rods but with mopar you never know. And the factory never drilled the holes in the bushing, I guess it took too much time or something. I drilled my own for extra insurrance in my last motor, but I did another 318 without drilling the holes and there hasn't been any problems. Also the bushings never look like they were starved for oil so its up to you. I know every other manufacturer drilled holes for oil, but mopar must not have thought it necessary. Another thing if you have a set of stock rods and want them bushed- it is possible to hone out the small end and install the bushings- if your worried about it.