Vinahouse

Hi guys, I currently have a 2003 CL55 with flood damaged. However, the car runs great with 100k miles on it. No damages to electrical what so ever. I’ve found an 06 R500 in great shape, beautiful leather and alcantara interior. I would imagine putting an m113k in the r500 would be a direct bolt on swap. And since I have the ecu, wire harness, keys, I would think this shouldn’t be a hard swap. Can anyone chime in on this? Thanks