Sell it. The Durango, that is, if it is in overall decent shape. Then find a 5.9 to buy and use the leftover cash to help fund the little things, like the carb, intake, distributer, motor mounts, etc.....
Just happened to have one the right length in the shed. No idea what it came out of. Had I not, I have a few longer ones from B and C bodies that I was going to shorten.
Well..... maybe. If by early A, you mean 66 and earlier, then "almost" would be my answer. We put a 727 behind the 360/408 in Jake's 65. We had to flatten the seam where the firewall meets the front of the tunnel. Also had to hammer clearance the side of the tunnel just a little to clear the...
Jake's 2002 Ram 1500 daily driver had 160k on it when he bought it and has 200k on it now. The 5.9 has never been apart except for a water pump and a 2x roller while we had the front apart. He runs the truck HARD! Has had a slight tick since the day he bought it. no issues......yet.