We have a kit like that (called a CoolRide kit). you can see it here:
http://ridetech.com/productinfo/prod...es/ARF6500.jpg
However, you have the same problem; you'll have to cut the subframe. Same bag, same location, same problem.
The additional problem is if you plan on running wide front wheels they may hit the shock absorber, as it will be mounted behind the a-arms.
-Britt-