That is interesting. I fitted an M117 in a W111 Coupe and another one in a W113 Pagoda on the assumption the M119 was not going to fit : the DOHC heads have the exhaust manifolds further on the side and I guess they would have interfered with the chassis rail as I have less than 1/2 inch clearance with the M117 manifolds. The W124 must be different. In what respect is it slightly easier to fit? Do you know if I could fit it in a W113?