Vintage turbo setups DID indeed exist (as previously mentioned...Okrasa) for the 36 and 40-horse motors.

VW pancake motors, though reliable, required a lot of tweaking when you added performance parts (ask me how I know)...

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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