This 1958 Ariel Square 4 restomod is one of the nicest looking examples to be offered for sale for quite some time. It was recently treated to a complete frame off restoration and the seller made some very nice upgrades though all of the original pieces go along with the sale.
The Ariel Square 4 engine is interesting in itself. It’s essentially two parallel twins set fore and aft of one another in a single crankcase with the two counter rotating crankshafts geared together. The counter rotation cancels gyroscopic forces and makes the engine quite smooth.