360 into a 318 car ??

If the 360 is from a truck, you will need a 360 oil pan and pick-up. the 318 pan won't work on a 360.
Your K-frame + your 318 isolators + 360 car motor mount brackets + B&M flex plate ( http://www.summitracing.com/parts/bmm-10239/applications/make/chrysler?prefilter=1 ) + your 904 + your 904 convertor + 360 harmonic balancer = EASY SWAP!
Yep, the oil pan, needs to be a car oil pan, and it has to be a 360 oil pan