Crusty free poly 318 and where it came from.

A 4" bore and stroke poly sounds freakin cool! I better not think too far into it right now as too not spend all that green, would like to pay off the house first ha. I was thinking the only engines that I would consider swapping into my 83 W150 slant 4 speed would be an early hemi or a poly to match or exceed the cool factor of the slant at roll-ins. Been soaking the poly in penetrating oil every other day and only have one rod cap left to remove, still stuck, and the cam and lifters still don't want to move much. Most every thing elso is off though.