[dups90gt]

If your dont want to go with 8" speakers then make 8" wooden spacers and mount those in before you mount the 6.5" speakers. Cut out 8" circles with 6.5" holes in them then screw it in the plastic mount. chop off the excess plastic on the back of the mount as your new magnet will be much larger then your old one (I used the same jig saw I used to cut the wood, took 5 seconds) before screwing in the speakers, put the plastic mounts back in place and test mount the new speakers to see if the magnet will clear the metal frame of the door. if its good screw it in. (paint the wood black before screwing it on the plastic mount as it will really stand out if you don't thru the grill.) Good Luck, this is a pretty old thread so Im not sure if you haven't already done this.