I went (and quite a few others) with:

Amazon.com: Infinity Reference 6032cf 6.5-Inch 180-Watt High-Performance Two-Way Speakers (Pair): Car Electronics

Very, very nice, especially for this price...it's kinda' weird to have George Thorogood sitting in your lap. The difference from the OEM speakers is remarkable.

And be sure to read:

https://www.crossfireforum.org/forum...-buck-mod.html

I did some research for the forum and found 270 uFarad best to my liking. It's a long thread, but go for it. Or not...