The hx35 turbo has been used on many 4 bangers with good results. One of the sport compact magazines did one on a 240 a few years back for around $2k. They used junkyard parts. It made 266 hp at approximately 5500 rpm and 271 lb-ft of torque at around 5k. This was with only 7 psi and crappy junkyard parts.
Dominant Eng. orp, ITG Maxogen panel filter, Focus-Power tune, Team Dynamic Pro Race 2 16x7 wheels in black(36 lb weight reduction from stock tire/wheel combo)