Mirrors: do I have to have them to be legal?

[Rob Petrie E395]

Outside mirrors
I cant find anything in the rule book that reads that I have to have them but I dont think you could get a 95 firebird without them. I searched and found 1 related thread but was not really about legality. I have seen cars like what I am putting together with and without them at races. I have been back on my project since my bracket car was broken for a couple of weeks and looking forward to making some more progress. The Rulebook reads under body

Alterations and customizing prohibited extent of customizing is limited to paint only

One other area of concern is when we did the body work I filled the hole for the radio antenna on the RR quarter panel anybody think this was a mistake and going to cause problems in tech.

I know I am in for a major *** kicking when I first get out there which I can live with (paying my dues till I get up to speed) but I just dont want to get sent home during tech for something stupid that I overlooked or took for granted.

Thanks in advance for the help