hope this in in the correct section?
I was thinking about the 2.3 and 2.8 derivatives' being the m52 engines, the 2.5 and 3l are m54. So is the s54 related in any way to the m54? is the s and the m important? I think the s54 is the m3 engine but being a 54 engine does that mean it is in any way related to the m54?