oddly, the engines in the the AQM-37 Jayhawk drone, a rocket-powered LR-64 engine, was a Harley Davidson engine, sort of.

AMF (American Machine and Foundry) was developing these rocket engines at the time it bought Harley-Davidson, so, it tasked HD with creating them.  

https://www.slashgear.com/1674937/us-military-drone-missiles-harley-davidson-engines