I have driven several 85'-90' 351w Crown Vic police interceptors that had over 100,000 miles on them. These were not gently driven and the cars are heavier than EBs. The AODs had none of the "issues" mentioned above. They are common,inexpensive,and simply bolt on to any 302 or 351w. The crank balance is 28oz. so the flex plate works with the original 302. In fact the the engine and trans are an easy swap into an EB. The 4R70W 302 Explorer is much rarer,more expensive,and a lot harder to install in an EB. I prefer the C4 so I kept it but I use a 351w PI and can't think of a better engine.