You've done great job! I remember these when they first came out on the race tracks! My brother bought one of the first light green colour 850cc Mini Van's in 1963!
Yes I understand the aero idea for the front brakes and the need to do the same at the rear, but if this is a 'fashion' thing, there's no telling where it will end up! I've seen a number of images with a swoopy roof box, is this in the kit as well?