There is a guy call Kev /
Kapri over on the 'Rods 'n' Sods' forum who is an expert on DVLA registrations.
He helped guide Gary on the original Sammio Spyder design to ensure it complied with the re-body rules.
These days, he offers help in return for a donation to his local hospice.
https://www.rodsnsods.co.uk/forum/to...de-biva-554469
If he doesn't know the answer, he may know someone who does.
Good luck, Paul.