Hi Andre, Lynn and others
First, IMHO, the Lola GT looks nothing like a Fiberfab Avenger/Valkyrie - in any of its guises.
As for the air vents/ducts etc, these were an early addition (see top image below). On the Attwood/Hobbs Le Mans car of 1963, the Le Mans scrutineers would not allow the centre duct through the roof as there was no rearward vision. This was a last minute addition after initial scrutineering by Specialised Mouldings.
The original Lola GT had cooling problems. Mecom tried with various ducts in the nose sides etc before the car was widened (see 2nd image below from Brands Hatch). The widening was carried out by Lola in England for Mecom (although Eric Broadley wasn't around when the wide body was added and he wasn't best pleased with the end result!).
Ford tried with various scoops on the Lola also, including scoops where the GT40 scoops are (see the Lola GT in the background in the GT40 pic below).
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What puzzles me is that the green, Japanese owned MK6, driven by Attwood and Hobbs at Le Mans in 1963, was identical in appearance to the original silver car. It could be that whoever restored the car in recent years felt it would look better in Mecom format even though painted green.
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The rebuilt green Le Mans car does not use the wide body styling of the Mecom car. Look at the front and rear wing profiles in the last 2 images below, especially the front arches of the Mecom car and where the rear clip meets the rocker panel. Both air ducts on the rear of the rebuilt Le Mans car (at the rear windows and the panel over the Le Mans scoop in the panel) below are removeable. The nostril was the biggest change, and this can be converted to the twin nostril look at least.
The ducting of the rebuilt green car is a work of art, with ducts going to the brakes, gearbox cooler, engine cooler and for engine aspiration, all trying to keep to the original design at the same time keeping the number of vents to a minimum.
The Lola is no doubt a prettier car without the vents. It did run without vents in its first two races, but not without troubles.
Hope this helps.
Cheers.
Rob