I think they are 'Forman' p330 replicas, supposidly not in production now although I believe they have a few chassis still in the 'cut metal' stage waiting to be welded up. Also the whole 'business' is up for sale see here....
NF Auto Development - Foreman Mk4
After ringing them a year or two ago they said they make more money with the parts business... NF Auto.
A nice replica although the roof is a few inches higher than original apparently to accomodate the taller driver.
Not sure if this is a NF Auto car.... if it was me I would have stopped as soon as I saw the sparks!!!!!
YouTube - Ferrari P4 Replica Engine Running
Andy