This is going back a bit but if they still exist, the answer is a definite YES.
In 1991 I purchased a pump unit from a company called HydroThruster (based somewhere in So California).
Essentially it was a 1/4 HP double arm motor like the kind used for grinding/sharpening wheels for tools. It was rewired for 1/3 HP and a magnetic linkage impeller driven, aircraft fuel pump was installed on each end.
The water throughput through each pump unit was 1500 gallon per hour through 1" piping at 12 ft of head pressure. A cheaper version of the pump only had one axle extending from the motor housing and handled 1500 gph max as compared to the 3000gph model.
Both models could be purchased with or without variable speed control. I hope they're still around. Sounds like exactly what you're looking for.