The body is a modified MGB shell, with different scuttle/screen frame, wings and bonnet. The shell was built at British Motor Heritage in Witney, Oxfordshire and was, I believe, completed at Cowley. It had the Rover V8 engine in 3.9l displacement, 5 speed Rover box, modified front suspension (no kingpins), power steering and a modified MGB/Sherpa back axle and upgraded suspension and brakes.
The car was hand built, luxuriously trimmed and could even be specified with aircon. Most went to japan but they are coming back at a hell of a rate.
Current prices range form ÂŁ8,000 to ÂŁ15,000 depending upon condition and spec.