Don't buy an ebay kits, I have owned quite a few turbo DSMs and have seen first hand he quality of ebay turbo kit parts. For one hte manifolds are made very shitty and tend to crack after a thousand miles or so, I have literally seen the compressor housings on the turboes glued.. yes I said glued together. The BOV's leak, I have had a ebay oil feed line explode while I was driving. The wastegates seem to be alright though never really heard anything bad about them. Just do your research and you'll be fine, I have owned alot of turbo cars and done a few custom turbo kits if you have any questions just PM me and I'll try and help you out.

But honestly IMO your best bet is to piece one together, it's usually cheaper and you get more of what you want. Just make sure you spend the money to get a nice Garrett, Turbonetics, Greddy, HKS, etc. turbo and buy a nice manifold I would stay away from the tubular manifolds although they look "pretty" they crack because of the weight of the turbo. The best manifolds for a daily driven car are either a cast or tubular manifold.

and as for DSM 450cc injectors they are alot cheaper than $60 go on local DSM forums and people normally sell them for $40 or so but make sure you get the resistor pack for them.