The M119 only used KE jet for a year or so, i think it would be hard to find. I would think your mission is to increase fuel flow? If you put in a bigger air flow meter with the same displacement you get less fuel flow because the airflow meter opens the fuel valve.

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600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.