Well, we recently recovered an unreleased Atari ST game "Highway Encounter" - which is really a great version - by far the best. The author said that there used to be an Amiga port which was done in a few days since the game was coded in a way it would be simple to port to Amiga. Unfortunetly that port is forever lost.
Stingray did say he is interested in doing an Amiga port, unfortunetly he didn't have time so far. Maybe that would be a more viable game for porting ?
Here is the eab thread about the game: