Dan,
There are others here more knowedgeable than me on this make, but as far as I know KVA's were the first GT40 replica's. The company has long ceased trading. the KVA 'C' type chassis is held in high regard as one of the best.
Finishing the car will involve alot of fabrication & fiberglass work. the quality of the finished car will depend entirely on the skill of the builder.
Probably a good step would be to join the GT40 Enthusiasts club, many of the members have KVA's. All parts are available, but you will have to hunt around!