Danneth,
The committee said that the vintage class was not supported enough last year so they do not want to run it this year.
They have also not seen enough support for trucks yet to have a specific class for them also - but what Rich says is right.
However - the 540 class has been opened up to any chassis running a sealed can motor. I know this might not be ideal but I'm tempted to run my Procat in that class with a really light battery
G