I had a JVC KD-SH909 installed in my '92 about 2 years ago. It required the guy to modify what I think was a Toyota dash kit to fit the Lexus. If all your existing stuff works, you should be able to sell all 3 pieces (if you have the Nak setup it the head unit, changer and amp) for at least $500 total on Ebay. You will have to buy and install an amp for the sub as most head units run the 4 corners and the Nak amp was 5 channel. But my system sounds WAY better than the original setup. I have an el-cheapo pioneer 200 watt amp running my sub, but it sounds beautiful! The 7" sub puts out a lot more sound than you think with some proper power to it. My JVC has separate sub pre-out and sub controls which you will need for this setup. It did cost me $300 to have this all installed at the Good Guys in Walnut Creek, CA but the sale of the existing Nak equipment paid for it, so I was happy. Good luck! B)