First off within the E82 I believe the ZF trans and the DCT have different paddles. So not sure which one you are attempting to retrofit.
With that said it sure looks like the F80 DCT paddles have a completely different mounting pad than the E82. I don't think it will mount up at all.
However you can likely purchase a E9x M3 DCT wheel with paddles and all and with some wiring make that work. At that point there are numerous aftermarket paddles available for the E9x M3:
