Light reading. https://forums.iboats.com/threads/complete-history-of-the-4-3-liter-with-casting-numbers.693935/
the 87 is a gen 2 4.3 - non balance shaft, 1-piece RMS
the 95 is a gen 4 4.3 - balance shaft, 1 piece RMS
the 87 will need the squishy engine mounts because the motor shakes like a...