If you like it get it. Im not a turbo person so Im not familiar with the mods but for the seats, to get it changed would cost a lot especialy leather. You could allways change the center color with a leather dye if your good and it would cost next to nothing if you do it yourself. 3 companies to check on that are,
http://leatherique.com/ (I was in a mercedes club that used them exclusivley)
http://www.leathermagic.com/
http://www.leatherworldtech.com/
Car looks rally nice. Targa turbo, I wish.