Probably true about the boxer four - I measured the 2.5 in the '02 Outback the other day and it's 31" wide but only 17" long. Keeps the bell housing bolts way out in the open.

Good word about the 245. I shall keep that in mind. Any known OM617 swaps into one?

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'82 300CD
"Pearl", the very first turbo diesel 123 coupe
Totaled 11/23/18, rebuild in progress.
'85 300TD, "Artemis".
'78 300D euro, "Ol' Red", mostly retired.
'85 300D, "Gandalf".