樓主這樣問，目前的確 是這個答案。
但日後難保MazdaSpeed不讓馬3服用MZR 2.3 DISI TURBO。
屆時‥‥(目前強化過的馬6 )

而Ford Focus ST220 ST
all alloy 2521cc engine with dual overhead camshafts,
4-valves per cylinder, 5-cylinder ,9.0:1 compression ratio
variable valve timing,
turbocharger with air-to-air intercooler.
220ps @ 5000rpm and 320Nm of torque @ 1500rpm.

http://img.mysan.de/mycars/ford_foc...ocus-st-05a.jpg
http://img.mysan.de/mycars/ford_foc...ocus-st-05b.jpg
http://img.mysan.de/mycars/ford_foc...ocus-st-05d.jpg
http://img.mysan.de/mycars/ford_foc...ocus-st-05e.jpg
http://img.mysan.de/mycars/ford_foc...ocus-st-05f.jpg
http://img.mysan.de/mycars/ford_foc...st-201b-100.jpg
http://img.mysan.de/mycars/ford_foc...st-205p-109.jpg
http://img.mysan.de/mycars/ford_foc...st-207p-118.jpg