Hi Devilman,
they do not generally run the capacities together,
thats just on the entry,
they divide into classes and sometimes have to combine the few that have less than 6 or so entries.
often have 2 or 3 grids of pre 75 and classic open classes.
if you want o have a look at the track go to google earth and zoom in, its near the coast next to the
river mouth and horse track,
also plenty of pic's in race reports section of OZVMX pages
cheers
Noel