As it's a track car not a road car it might be worth seeing if using spacers you can tilt the engine back a bit. There's a guy on club GTI who races a VR, might be worth checking out his threads to se ehow he dealt with the boat anchor up front. I've seen his car on track and it looked to handle perfectly.
You'll never get rid of completely though, it's a FWD car after all. I can get my 8v to understeer like mad even on the semi slicks if I go mad with the throttle mid corner.
Nick