In March however the ACO only had 21 entrants .
With no formal championship to adhere to , the ACO was now free to set ACO 's own invitation list to the great race and so it ACO 's its entry parameters to offer four distinct divisions :
In March however the ACO only had 21 entrants , but with no formal championship to adhere to , the ACO was now free to set its own invitation list to the great race and so it revised its entry parameters to offer four distinct divisions :