The saxo looks like you spent some time and effort on it, nice work
Only french motor I've owned was gt turbo about 15yrs ago .
Have you tried specialist insurers Adrian flux , keith Michaels ect .
If you don't do many miles a "limited mileage" policy .
Putting your mrs or mum on the policy sometimes helps .
Once you get past the terminology scoobys are quite ingeniously designed and fairly easy to work on