Necromancing a thread and I realize the OP will not see this or (at this time) still care. But, for anyone else wondering:
1) The short answer is YES the LS (2000-02) and MKVIII wheels will physically interchange.
2) NO, the airbag will not swap over, and the plug-in for the wheel controls is wired differently between the LS and the MKVIII.
3) The entire steering column WILL swap and the clockspring module plugs are identical between LS and MKVIII (LS has 4 more wires exiting the black plug for the radio/media controls).
4) If you use the MKVIII MFS on the LS column, no problems. LS MFS with 'Auto' wiper function will wreak havoc with the MKVIII wiper control module (still working on a bypass for that, studying wiring diagrams sucks!).
The ONLY reason I am bringing this up (or back I should say) is I am swapping in a complete 2000 LS column and using the MEDIA/RADIO buttons to either control the aftermarket radio (If I can get the harness built/integrated), or use the buttons to control 'other' functions as of yet to be determined).