I spent around 20 minutes searching since I'm 99% sure this has been covered at least once but I'm going to try anyway. First off, I know I don't know jack about car audio. I'm 100% certain you guys know more and can point me in the right direction. I always use finely stranded 12 gauge wire and try to find it with the gasoline resistant coating on it. I match the lengths of all pairs of wires. I don't coil and I try to keep bend diameters over 6". I don't put any connectors in and always solder & shrink tube. OK, I have a Jensen MP3510. Go ahead and make fun of me for buying it. I got it about a year ago for $130 on sale. It has more than enough power to give me a headache. I like the stereo just loud enough to hear it over the tires. I'm more interested in quality than quantity. I have a pickup. Currently I have the stock 4x10s in the back and 3.5" in the front. I used to have 6" 3ways in the back but I blew them. The dumbasses that put my truck together 20 years ago crossed the wires to the speakers. That's correct, the left and right channels are backwards. I first noticed this on a Metallica song. That's something that has to be rectified. When I fix that I'll probably replace the wire with 12 gauge THNN wire. So, my question is, what do you suggest for speakers? I'm going to buy some el-cheapo Jensen ones that are on clearance at Wally-world right now. I successfully modified the stocker brackets in the back for 6" speakers. Do you think I'd have the same luck with 6x9s? It looks like it'd be a tight fit. Maybe 4x6s? I don't want no freaking 4x10s. I have yet to ever see one that sounded good. Pioneer makes some that don't sound too bad but... What about the front speakers? Has anyone successfully butchered the stock brackets for 4" speakers? I don't want to put speakers in the doors. I don't mind door speakers but they'd be ruined in short order. Not only are they in the kicking area but they'd regularly get submersed in water. Even though it's my daily driver it also doubles as my deep-sea submersible vehicle which is why I have no floor except floor mats.