From the listing:
The 6 Wheeled March from 1976 – built as March’s response to the Tyrrell P34. A unique opportunity to acquire the only March 6 wheel car in race ready condition and one of only two prototypes built. Headline grabbing car both in period and today – featured at Silverstone Classic and Goodwood Festival of Speed 2012 and numerous press articles. Completely rebuilt and in race ready condition – an eye opening entry into Masters or Historic Formula One. Complete with rebuilt and very low miles LPE Cosworth DFV, good spares package, FIA HTP papers applied for.
Such a shame they never got to run this car in an f1 race.
Currently listed for sale at http://www.classicdriver.com/ by Speedmaster
PRICE ON REQUEST
Have you checked out the 1976 Tyrrell P34 6 Wheeler