dumrick wrote:It kind of depends on which are considered "top class formulas", from the top of my head they are not involved in FNippon, Master, Superleague or Auto GP (previously F3000 Euro).
That's right - FN are Swift, IFM are Tatuus, SF are Panoz and AutoGP/F3000 Europe using Lola (the old A1GP car).
I think it's a sad reflection on F3 that Dallara are the only chassis builder, perhaps that's an area where the touring car idea of equalization weights, as "extra time multiball" as it seems, should be considered in single seaters ...