We offer three different speakers to fit the dash of your 1967 Chevelle without air conditioning. These speakers all come with a bracket for mounting. The dual voice coil speakeris a 4"x10" speaker that has two tweeters, one for the left channel and one for the right channel. The dual dash mount speaker comes with two, 3.5" speakers mounted on a board. The dualdash mount is available with either Custom Autosound speakers or Kenwood speakers pre-installed on the plate. We recommend the dual voice coil speaker as it has better mid-range response dueto more surface area of the actual speaker itself and has a higher power rating.