6"x8" which is a Ford/Mazda size. Many manufacturers make a direct fit replacement. The rear speakers are also 6"x8". I put in basic Pioneer three ways from Wal-Mart in my non-shaker system and saw a big improvement.
A forum community dedicated to Ford Mustang owners and enthusiasts. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more!