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3.4 GM engines will fit quite easily with only changes in starter mounting, covers and the like.

The 3.8 liter series I, II, III engines will fit nicely and work with the original transmissions with a little modification, wiring and computer modification and mount fabrication. The supercharged version really makes the car go!

The V8 Swap is the ultimate power trip, but a much more difficult swap.

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Q: What engine can you put in a 1987 Pontiac Fiero to get the best performance?
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