ok, small update.
found the TEC, a nice 15x30mm unit that can displace 17.8W of heat. the 2pac at 1.55v will be about 14w of heat (a guesstimate)
this TEC will fit nicely between the original mounting bolt -the center bolt. so mounting shall be easy.

Have a 2mm copper plate to put on the chip side of the TEC to spread the heat too.

Dont think ill bother with a back side cooler as the TEC will pump enough cooling to the chips anyway.

this is going to be totally impractical and go against the reason of having a 2pac (silent, power efficient mining), but its gonna be fun lol.