well, you could go that route. To my memory there is nothing special about the crate engine bottom end. If it is mopar I don't think they are blueprinted or anything. You might consider looking for a junkyard engine with good bore wear and just swapping over the other parts from the crate. I picked up one with a spun bearing for 100$ off craigslist. Even at 140K miles you could still see the factory crosshatch on the piston bores. Might be a cheaper option.