I'm going your route X53Jay with the JL C2-600s in all four doors and the C2-075 tweeters in the doors as well.

I got the Memphis units coming for the dash.

I'll run these on the stock OE Factory Nav/HiFi system until I get up the nerve and dough to do the Eonon GA6166 Head Unit install.

Got some good eBay deals from

JL Audio C2-075ct 0.75" Car Speaker Tweeters 356052104 | eBay


JL AUDIO C2-600CW +2YR WRNTY 6" 150W 4 OHM CAR AUDIO STEREO COMPONENT MID WOOFER | eBay

and

Memphis Power Reference PRX275 2.75" Coaxial Speakers 30w/Max 15w/RMS One Pair | eBay

Mike

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Mike
Dallas, TX & Appleton, WI
2003 E53 4.4i Pearl Beige
2003 E46 330Xi Monaco Blue
2007 E90 335Xi Black Sapphire Metallic
2011 F25 X3 28i Black Sapphire Metallic