Hi lo-fi,
Thank you for getting back to me. Yes - I have been thinking the same re engine moving and the effect on clearance.
Having slept on it I think the easiest solution will be to cut the 'can' part of the manifolds (they are tubular steel with an oversize collector) and shorten them by an inch or so and then re-weld it all back together, rather than changing/moving the steering box, which would cause more issues I suspect.
Happy days.
Matt