66dart gt needs new motor

The most critical item (IMO) in this swap are the exhaust manifolds. You'll need some OE 273 cast iron pieces (66 or older) or tube headers. Probably easiest are the shorty tube headers that Layson's restorations sells, google layson's to find them. Not sure also if you need a different center link on the steering linkage, maybe someone else knows. Easiest motor upgrade (cheapest) is a 318, you can use the stock 66 273 engine mount brackets with NO modifications, to use a 340 or 360 you need to either modify the drivers side bracket or buy new mounts from Schumacher, google them to locate them as well. Enjoy.....