The flex pipe eliminates the need to use the hangers. I have no issues with clearance, noise, heatshield interference etc. with the Turbo XS DP/RP combo.
If you are going to install it yourself, the RP is a piece of cake. But to install the DP/RP combo (huge gains), either get a shop to do it for you, find a place that will let you use a lift, or take your time and expect some difficulty with removal of the DP from the turbo housing. You will find it easiest if you remove the cross-member which blocks access. There are good instructions elsewhere here with photos. Even if you have a shop do it, they would be very grateful to have a print-out of those instructions and photos to use.
When you get it installed, let us know if you get a CEL after a few days. I'm dealing with that now. I plan on installing a spark plug extender between the O2 sensor and the bung and see if that solves the problem. There are other threads here about that.
Don't worry about the hangers. Don't need 'em Those turbo housing bolts, however, are where the bitching and griping and cussing may crop up! Take your time. It's well worth it.