For engine swap...difference between LA 318 / 360

Some things will depend on the year of the 360 block and heads. Smog heads will need the A.I.R. ports plugged to work with the 318 exhaust manifolds. I'd get some 360 (or 340 if you have the extra cash) manifolds or headers instead for better flow and go with a bigger tube full dual exhaust. Intake to match the heads too. Carb to match the horsepower and RPM range it will be operated. Going to a 727 instead of a 904 (I wouldn't, but, that's my personal choice), you will need a slip yoke to match it and the U-joint to be used. If the car is a floor shift, some of the shift linkage is different, but can usually be modified. Just make sure the extension housing has the bosses for the lower shifter linkage bracket. The kickdown linkage is different too if you're going from a stock 318 2bbl to a 4bbl. Get a complete 4bbl setup, or, go to a cable system. As mentioned, the oil pans are different. Get a car type pan for that body and you should be able to use the 318 pickup, dip stick, and tube if your 360 doesn't already come with one. All the other things mentioned regarding motor mount brackets, converter/flexplate, and brackets/pulleys is needed too. One note on the crank pulley is that the one on the '71 318 has one bolt offset. If you use a '72 and newer 360 balancer with that pulley, you'll need to oblong that one pulley hole to get the last bolt installed. Not a big deal, but, I thought I would mention it.