That's definitely a T4 exhaust side with the V-band style 3" clamp. Comp side looks big.. at least a 62-1, but could be a small-medium sized T-series housing. T66 would be really laggy on a 1.8L I4 motor... but he's probably got it built to handle really high rpm's. If he were to turn up the boost, he'd be making quite a bit more power. 472 whp at 20 lbs is pretty damn good.