This would, at worst, require an adapter, which would probably take half a day to make. Two layer boards I can get in an hour and a half, not counting the drive, and four and six layers takes about three. Respinning entire circuit boards doesn't fit our model, generally speaking. I have, on occasion, produced mezzanine boards for such purposes.

As for changing from an established circuit with a Motorola MCU to an 805x, well ... that's not likely. The 805x's I've put in place were Maxim/Dallas one-clockers that fit the classic pinout. They went into boards that were built by Signetics, or Intel, and adapted to a specific task. When the requirements expanded, we put a mezzanine board in place to accomodate the external memory and faster clocks.

RE