318 to 360

As gremlin says make sure to get the torque converter for a 360 - either that or you could get am SFI flex plate for less that is balanced for a 360 and use your existing converter.

As far as the accessories go - everything you have on the 318 will bolt on to the 360, pulleys, AC, pwr steering pump etc. Be sure to use a matched set of brackets and pulleys otherwise you might have pulley alignment problems.

If using 318 exh manifolds you should consider going to headers or larger 360 style manifolds in the interest of matching the flow capabilities of the larger motor.

Have fun with it !