Luckily I never had to replace the oil filter/cooler assembly on any of my pentastars, including the one in a Ram 1500 I owned. I only owned them until about 70K miles. For the Rams I'd imagine you'd need one of those lay on, top side creepers like mentioned above or lay on a piece of foam. I feel for ya. Access is rough on a Ram 1500. I understand that in just about every case, it's a seal failure that caused the leak on these, but regardless, I'd want an aluminum one vs plastic. Then use known good seals and sensors. These things are frustrating because you cant see the leak, nor can you test run them. Everything has to be buttoned back up to factory form. All you can do is guess which seal or area leaked after you pull the assembly out.