i had this prob on my old 5.0
I used this
I used my finger and ran this stuff between the headlight clear lens and the base plastic of the headlight housing. it dries clear and seals up any of the gaps
after that i never got anymore condensation in my lights. im sure the same concept would work for our SRT lights.
ps. i would avoid drilling any holes in the lights, you want there to be NO water going through your lights in the first place, not just a hole to vent it out