The only place you'll have to get creative is where the dash meets the windshield. The PDK dash also replaces the trim piece that fits between the stock dash and the windshield.
For the trans tunnel mounts, I cut those pieces off the stock dash and used a rivet and epoxy to mount thouse and it worked very well.
For the mounts near the fresh air vents, just drill a couple of holes in the dash and use some nuts and bolts.
My car has a cage and bars right on the A pillars so I had to cut the ends of the dash off and then reattach them. It turned out OK but I hated cutting up such a nice piece.