What A1 VW is it? The conversion would require a lot of work since the first AWD(Syncro) was on the Quantum and thats B2/Audi400 then the A2 Golfs in Europe had them on the Rallye G60 and Limited. B3 Passat had it also. I hear that the Syncro back then isnt too good with a lot of power. VW did make an AWD twin engine Scirocco but never produced it. You can put a 1.8t in a Rabbit and it would be faster than a new 1.8t stock.