Doing a swap in my 76 wagon. Currents has the 2.8 v6 and am going to be swapping it with a 2.8 out of a ranger. What changes or complications could I run into. I'm assuming not much sice it's pretty much the same engine.

Enzo is right on the timing cover and water pump, which are better , the water pump has a much bigger bearing , and a fan clutch that screws on, a big plus , also has the extra pulleys on the water pump, only the feedback carb had the different distributor , your exhaust manifolds will fit, the block is thicker and stronger, (hey it's going into a truck) and the cam bearings are larger, also a pluss, order a comp cam for that year ranger/bronco II , use the lower tube that comes with the ranger for the heater hose , it crosses under the crank pulley and not in the way of the A/C compressor,

Engine mounts will swap over to the newer 2.8 block, and the 2.9 along with the early 4.0 , whatever transmission bolts to the 2.8 will bolt to the 2.9 and 4.0 also, same flywheel too,