In the late 1980's I purchased Alpine's very first pull out radio , I had the Alpine's cd shuttle in the trunk, alpine 6 x 9 's in the rear 5 1/4 's in front doors. I had also hidden in the glove box an alpine 3331 11 bank equalizer. Then i had 2 rockford fosgate punch 500 amps. running 2 alpine 8" drivers. Alpine and Rockford fosgate has always sounded good together.