Yes, they were produced, but in small numbers. somewhere i have the numbers of them, but can't find it right now. it was an oilfield engine.
The timeline name does not show up on the sales literature Temporary Specification Bulletin No. 1047 - 168-2A (3-55) Oilfield Power Units - Radial cooled....long run.
Sold & serviced by Shrimpton Manufacturing & Supply Co.