The M100 came in 6.3 and 6.9l versions.

The M116 came in 3.5, 3.8 and 4.2l versions.

The M117 came in 4.5, 5.0 and 5.6l versions.

The M119 came in 4.2 and 5.0l versions.

I'm not familiar with the latest 4.3l block (M112?) and its variants.

As fas as the M116 and M117 are concerned, the block material was changed between the first and second generation. I don't know about the second and third generation.

Sixto
91 300SE
87 300SDL
83 300SD