palmdale sucks balls!!

just a couple questions for those of you that have been to fontana before.. my friend is bringing his z28.. he ran a 13.7 at palmdale.. and since then he added headers and a couple other things.. does he need a helmet? im not sure what the restrictions are for 13sec cars or lower.. at palmdale, they require one.. also, what time do they close down that day? just in case i cant get there at 630.. let me know, thanks!