Thanks for the responses and yes they do need to see a chassis number as well as the VIN which is quoted on the carte gris (French vehicle registration document) this is the French we are talking about.
I believe the Spitfire MKIV/1500 and GT6 MK3 chassis all had an prefixed FC ******** chassis number spot welded to the out rigger. I wish but there is no way the French would accept its under the sump. Bottom line is id like to find the correct number but as I say I may have to be creative Thanks for anymore thoughts
Thirsty Steve