What differences are inherent with the 93-versus 94-95 motors? Dimensions perhaps?

I am asking because I had a collision with my 93 W124 this week, and I am looking to swap to Euro lights this time around while the car gets repaired...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car