Short answer - yes you can use it. Long answer - you will need to replace the rear differential if you don't want an utter dog off the line. 88hp vs 125hp. Would be better to find the proper motor.

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1987 VW Jetta Mk II - Daily Driver
1992 W201 2.3 - sold
1985 W126 380se - sold
1985 W123 OM617.952 - sold
1981 W123 OM617.912 - sold
1986 W201 2.3 - sold
1979 W123 OM 617.912 - sold