This company builds V-12 engines based on the automotive Jaguar for use in Homebuilt aircraft, mainly for aircraft scale models to 3/4, 2/3, etc.  Those that were used in WWII. And for other types of course.

"Astec V-12, with reduction gear"

-Being a Jaguar engine, the V12 has the look of any Mustang, Spitfire, P-40, etc, very realistic.

-The exhaust pipes can match the real model. The reduction gear makes the engine architecture look credible as well.

-Art Hendricks' conversion company has prepared a Jaguar V-12 car engine for the homebuilt 1/2 model of the famous Mustang P-51. This is the Stewart S-51 Kit.

"Jaguar V-12 engine"

-In the photo, taken from the front, we have the superposed reduction gear box. The photo token from the rear shows a supercharger, an alternator and two "Vertex de Scintilla" type magnetos.