I spoke to Rod at FOS last year, really nice down to earth bloke and happy to talk about the spec of the car to interested onlookers.
Underneath there is a spaceframe with what started life as a 4-pot Toyota Celica motor although looking at it you'd not recognise it.
Incredibly skilled driver who often sets the time to beat against exotic F1 / Le Mans machinery and is nearly always on the podium at Goodwood.
Let's also not forget that he gets this car pretty much out of 'mothballs' to do these timed demonstration runs so it's amazing it stays together and performs so well. He was complaining that it was a tad rich with a miss-fire if I recall correctly which makes it even more incredible in my eyes..
If you ever get a chance to see him run - don't miss it! :thumbsup:
I've got a bunch of pics of the car somewhere, if anyone is interested I'll dig them out and post a few.