[EDIT: I see that The Hack has beat me to it in most respects.]
Apolgies if this is old news to many folks. I'm fairly new to the BMW owner crowd.
The 360 HP flavor was in the M3 CSL. From the pictures it appears as though the big "intake" difference is the CSL airbox. There could be others of course.
https://www.topspeed.com/cars/bmw/20...-ar157689.html
"Under the hood BMW kept the same 3.2-liter straight-six-cylinder engine found in the European M3, but with an output increased by 17 horsepower and 1 pound-feet of torque. As a result, the M3 CSL delivered a total of 360 horsepower at 7,900 rpm and 273 pound-feet of torque at 4,900 rpm. Independent dyno results read showed more like 375 horsepower, but those were never the “official” specifications."
