What is needed to swap from a 318 to 360 from 86 w250

I'd run the 904 as well. You will need this flex plate and it will all bolt together. https://blueprintengines.com/products/chrysler-sb-steel-sfi-flex-plate-la-360-sb-external-balance-chrysler-compatible?srsltid=AfmBOor5yT1SjudBi3Af7J33FecPF30311-AsZKAhaaGItrBIEsZQNCv No need to balance the converter that way.