[ChrisL]

Ray,
I’ve noticed that it’s not uncommon for GT40 bodies to have been fitted out of square relative to the chassis (most bodies are not totally symmetrical anyway) so it may not necessarily be the engine that is skewed. The easiest way to check this is to squat down behind the car and compare how each rear wheel lines up with the outer edge of the bodywork (use the tyre tread pattern as a marker). It’s my guess that you will see enough difference to explain your engine location issue. Having said that, the simplest solution may still be to re-locate the engine.