Hi Martin.
Welcome. If you really like the car then give it a go. The K3 is a much more modern car than my Mk1 Rossa and a lot of the problems that I had simply won't arise, although that's not to say that it won't have problems of it's own...! It is important that you read the IVA manual which you will find here
https://www.gov.uk/vehicle-approval/ind ... al-manuals and you need the one for M1 vehicles. It's good bed time reading (sends you to sleep
) but with the cost of the test (£450) it's well worth it. Good luck.
Edited to say that I've just re-read your post and see that the car is part built so a lot will depend on the quality of the build and parts used. Mine was a load of scrap badly put together in a coal cellar at midnight during a power cut, or at least it seemed like that
However, I did buy it unseen but most things were not apparent just by looking at them so be careful.