Also I'm not sure if this has already been touched upon, but there was both a V8 and a Straight-6 version of the AJP engine used in TVRs after the Rover V8.

[ame="http://en.wikipedia.org/wiki/TVR_Speed_Eight_engine"]TVR Speed Eight engine - Wikipedia, the free encyclopedia[/ame]
[ame="http://en.wikipedia.org/wiki/TVR_Speed_Six_engine"]TVR Speed Six engine - Wikipedia, the free encyclopedia[/ame]