I have one sat in my car....well a YB anyway...and they are generally on pectel or subsequently pi management.....

Tommy (Field), Julian Godfrey, Harvey Gibbs could all spec and build a capable rally engine....you would not want one in a road though as the fuel we run them on is £2.30 ish a litre.....

The design of rally engines has been developed for many reasons and none really relate to the spec you would want in a road car engine....apart from perhaps throttle response....