It is not difficult to modify the cat if you need to. The hardest part about it is removing and reinstalling the y-pipe. It helps that the stock cats have the catalyst in the forward part of the cat--the back (the part that interferes with the driveshaft) is empty.
If you want, I have a y-pipe with that has been modified to to clear a larger driveshaft sitting in my shed. The pipe is used, but the catalysts are new, less than 1000 miles on them. I had it rebuilt at a local shop. I can show you the what you need to do, or trade you for a new (or similar mileage) y-pipe.
If you want, I have a y-pipe with that has been modified to to clear a larger driveshaft sitting in my shed. The pipe is used, but the catalysts are new, less than 1000 miles on them. I had it rebuilt at a local shop. I can show you the what you need to do, or trade you for a new (or similar mileage) y-pipe.