Yes I replaced the front tweeters in the door with a JL upgrade replacement. I would have to look up the model number but its a substantial upgrade. yes you are correct that I am still running the DSP amp in the vehicle. The only other thing that I changed out is the rear subwoofer where I installed the JL Audio Stealth sub in place of the original. I tapped into the rear sub signal feeds to drive the focal amp dedicated to the sub. I have a from bluetooth unit installed so that I can stream my music from my iPhone through the DSP audio system. Send me a PM with your contact info cell number and email and I will send back my contact info and we can arrange a time to meet up. Maybe at a starbucks location perhaps.