[Coco] Upgrade 16k Coco2 (26-3136A) to 64k using Coco3 leftover RAM chips?

[David Roper]

Hi All,

Just wondering if it's possible to use the 4x MT4067-12 chips that just
came off my replacement Coco3 motherboard (after upgrading the Coco3 to
512k) to upgrade my 16k Coco2 to 64k?

My Coco2 has two socketed MB81416-12 chips in IC10 and IC11, and I can see
the "RAM 64K" jumper pads ready for soldering

But, I know almost nothing about this process, and google isn't throwing me
much light. The data sheets for all the chips involved aren't
comprehensible by me at this point

Any advice, either way?

Kind regards,
David