i contacted the dvla wen i did my rear floor pans, and they were happier, takin into account the age of the vehicle, for it to lose its ID stamp rather than have it welded back in for example, looks less sus

theres no perfect solution, i think the dvla and the authorities realise this, and whatever method u go for, its going to raise suspision at some point, but the fact wil remain the truth will come out either way when investigated if necessary at any point in future

also, ford want to charge insane amounts of money for the chassis stamp!!

also helped in my case that mine is a boggo 1.3 pop shell, and would take an absolute idiot to attempt to weld in the ID of a boggo 1.3 popular to anythin other than itself, the ultimate in pointless ringers