It's been done before, there was a guy on here for a while doing one (I guess he's finished now). The standard gearbox won't last long, but there are a couple of uprated FWD gearsets available. You can also get LSDs out of some of the faster FWD SR20 powered Nissans, which will help loads with traction.
The rest is just putting 'R bits in where the standard bits were.