318 truck to car ???

Sorry to hijack but I have a similar question...
Im thinking of pulling the 360 outta my 84 Dodge 1/2 ton and.putting a 318 in for better mileage.... any obstacles other than sump and oil pan? My ac works and would like to use it with the 318
Thanks!

The important thing to remember, and it goes along with this thread, is that 318/340 oil pans cannot interchange with 360 oil pans as the 360 pan has a larger diameter opening at the front and rear of the pan.

You will need a 318 truck pan to go along with the 318.