LA 360 should bolt in place of the polly
the engine mount bracket is diff on a 360,lugs/ears on driver side of block are spaced differnt from a 318/340 LA engine
ez to over come with some washers/spacers
the 360 will need a correct wieghted torque verter or a B&M 360 balanced fly wheel to run the stock polly torque verter
best bet is to use the conversion engine mouts for it,not sure if the polly mounts swap over...but worth looking at while inhand and swaping engines
may need all the later LA front brackets pullys,power steering....
you may be left hand drive...that may make it differant for the brackets/pumps
got any pics of the polly under the hood?
oh! welcome to the board