P 1000 w

Good question Paul. The original P1000 was destroyed in a fatal accident at Sebring March 26, 1966. That was its only race. In Spain's book he says it was rumored to have been buried trackside.
Yes it's a Bryan (not Brian) Wingfield recreation.
Bryan also built up the three cars that the Willment family had reserved the chassis numbers for. GT40P/1087, GT40P/1088 & GT40P/1089

As Stephen says it was built by Bryan Wingfield in the 1980s using mostly original parts although based on a Tennant Panels chassis. It featured recently in Motor Racing magazine, I think it was Motor Racing.