Stepe

Any 272? what about SLK350 M272.969 (305hp 360nm 11.7:1), it has starter on left (driver) side instead of right. Thx for info.

Tsumi

Not sure about that, the starter might be an issue. The engine block might have positions for starter on either side, so I would check for that. If it does, then it should fit without issues.

I swapped a CL55 AMG engine (5.4 M113) into my R500 and it is running properly, no changes to coding needed. Theoretically you could also swap in a 5.4 M273 but you will probably need professional coding assistance.