Jeez, what's everyone's problem here.
OP, do some research on 2GNT.com about modding your car. Most people go with the Pacesetter header as there is basically no difference power-wise between the big name brand ones and the cheap eBay ones. Hell, even the fastest NT eclipse in the world uses a Pacesetter header. Turboing a 420a is not hard either. Just takes time and research to learn everything about what it takes for at turbo to work. I have turbo'ed mine and I'm running stock injectors and have been for almost a year. You can run 8 psi safely on stock injectors with our cars and will be around 210-220 whp (friend dyno'ed at 6 psi and made 210 hp 214 lb tq). I put together my own kit and spent about 2000 total for everything I needed. I could have done it for cheaper (SMIC instead of FMIC, internal wastegate setup instead of external, etc), but I bought parts that I knew I would be ok with for a long while.