Oxford 13/60 The existing chassis/engine are unknown so if used an IVA would be needed.
We are using a Triumph Spitfire chassis, engine and running gear to get around this as it then becomes a body swap SAMMIO style.
Fortunately the owner has the original receipts for the body which relates to a Triumph based kit which should help when dealing with DVLA.
Paul L Cutting the body would improve things and involve a lot of work but part of the Monaco's charm is the "cigar tube" shape.
That said the front end will need a little cutting.