Russ (DHM).
This is the kit that I originally bought from ATP, added a new billet compressor wheel, added pumpaspeed header, then sent it to DHM and kept my cartridge and compressor side and tossed out everything else for another set of headers with external gate and another intercooler.
I have been through 2 turbo kits (sorta), 2 headers, 3 new downpipes, 2 new intercoolers, 3 charge pipes, etc ... After a lot of work and a lot of money I am pretty confident this is a pretty good setup for the car. I don't think I would trade it in for a bigger turbo.