There car was built for long term development work on the MGA Coupe, but competition work was a big part of the development effort. The car was built in June 1958, nine months after the first MGA Coupe. PRX 14, an Abingdon works registration, was affixed to a 1958 MGA Coupe as a "demonstration car". When the need to improve the performance of the MGA became apparent PRX 14 became the test vehicle, and the first 1600 engine and uprated disc brakes together with various under bonnet mods were installed. The car has had engines fitted 1500, 1600, 1622, and finally 1800 over-bored to 1844cc.

This car has been featured in numerous articles and books and was a regular competitor at Prescott Hill Climb. It owes much of its prominence to A.F Rivers Fletcher, the car's former long term owner. Other previous drivers include Jack Sears and Nancy Mitchell. It is most recently fitted with many of Fletcher's individual touches such as MK2 Grille, Mota Lita steering wheel, boot rack, a number of badges, and his special "throttle stick".

The car is (or was) offer for sale in January 2009 at the astounding asking price of £84,000 (approx. €89,679 or $116,663). It is listed again in July 2009 as "Offers Considered". For as long as the links work, see here: http://www.carandclassic.co.uk/car/C89859
and here: http://www.ashridgeautomobiles.co.uk/mga.html

There is a book "MG Past & Present" (not specifically about MGA) written by long term prior owner (and competition driver) of the car, A.F. Rivers Fletcher. He was of the opinion that there was nothing particularly grandeur about the history of this car. It is what it is, a factory development car sold off at end of the production period with only minimal competition history prior to his ownership. It does have a unique niche in MGA history, but not so prevalent as to demand such a high place in market pricing.

Addendum: Septenber 7, 2009:
The car has now changed hands, and the new owner wants to say hello to the MG world. Mike Peters in Lancashire, England, will be putting the car back into service as a vintage racer, continuiung the car's long history of competition use. With Mike's feedback I intend to post more about this car soon.