86 Black Roller 318, swap/interchange into 72 318

FunnyOldMan said
Plan is to have a spare short block, swap heads and aim to have 400 fwhp down the line from one of the 2. Needed to know what would interchange to keep, remove to sell, and what to toss.

400 to the wheels from a 318?

sell everything everything and start over with a stroker kit. or a 360.