[tatter06]

All very good cars. Recently had a similar quandary as we have just started a classic le mans (pre 1993) class at our club.

No one has got their hands on a slot.it 512 yet so can't comment on that, the others didn't  race at le mans, if that matters to you.

908/3 is generally regarded as the quickest nsr (but not le mans), P68 next, but again I think didn't make it to le mans

Slot.it matra is quick as standard, probably quickest slot.it classic on wood.

Thunderslot Lola t70 is a le mans car, quick but tricky to set up for wood, the chassis and pod seem to be made of cling film 

Avant slot mirage g8 is a left field choice but you can fit a long can anglewinder so potentially very quick in a straight line

Are group c or group 5 classic enough? Some good quick cars there by slot it and sideways.

Hope that helps.


Edit: whoops just saw the post '76 bit, that might make all my suggestions irrelevant!