It's difficult to put an exact number on it because there are so many different routes you can go but it will cost more than a small block transplant. I live in a fairly densely populated area so I find that getting engines, trans and other parts is easy. I bought a complete 60,000 mile 440 out of a 1977 motor home for $200 in 2011 and I was able to hear it run before I pulled it. I just sold it for $600 to a guy putting it into a Charger. If you can find a good engine like the one I just sold you can do it on a tight budget and wind up with a strong running car. I've managed to build a stock pile of engine and trans cores in the seven years I've been into Mopars. One more thing. If you do go small block, I recommend that you don't waste time and money on a 318. Get a 360 and you're miles ahead.
