You can put one together, and use the efi boost module, all in for about 3-3500 if your average with spanners
Only down fall is you need the meg keyway'd crank pulley. So is an after cam belt job really
That's the dilemma I'm in. By the time you buy everything to make a s/charged kit and do it yourself it's not a million miles away from just buying the whole kit outright from ktec and without any of the hassle.