just putting it out there:
Audi's TT-RS race car ditched the Haldex and has front wheel drive only
The Scirocco R has front wheel drive only
i'm with you in that i wouldn't want to put big power through the front wheels, but i also mirror other posters' sentiment in that it is pointless to try and put 4WD in your Ed30 when you could easily buy an S3 for a lot less money, or an R32 if you want to stick to the Mk5 and turbo that. it would be A LOT cheaper by the sounds of things!