MFSW retrofit instructions are posted on MotoringFile:
http://www.motoringfile.com/howto/MFSW.PDF. The instructions are for a 2-spoke wheel, but the procedure should be the same for a 3-spoke (with very minor differences for the steering wheel parts). The bulk of the work involves installing the harness in the dash and engine compartment. The actual steering wheel portion should be easy. It estimates the work at 3.5 hours. I've done a couple of retrofits that involve installing wiring harnesses, and IMO this looks straightforward, just very time consuming to take apart the interior trim to install the harness.