new engine
Let me add , I really like to see a high perf 273 running in those old Darts . If I had the car I would put the money into the 273 , you can get a good solid daily cruiser with the 273 , costs a bit more to do than the 318 or 360 , then again if it were about money we'd all drive a chebby 350 , they cost less to build than any Mopar