If thinking of them as a kit car then they are at the top end of the scale.
There are a few companies who I consider at that level.
The Ultima is a supercar and a stunning bit of kit.
A lot of people consider kit cars as cobbled together by someone in a garage/shed.
True to a certain extent at thelower end.
However the top end cars are stunning and so well developed.
The replica cars from the good companies look so good to.
Some lovely Jag replicas to be had.
Not the rebodied MX5 ones that look like a Ferrari though!
The major numbers of kits seem to be Cobras or Sevens. The end product seems to vary widely from company to company and skill/attention to detail of the builder.
Stoneleigh is a good place to go to see the full spectrum, and also the companies who supply components.
A good day out in fact.
Maybe next year.