I went to the local stereo shop where I hang out and asked if they had any cheap, get-me-by 6 x 9's as they occasionally get some some in on trade and what not, but Loddie, the installer, says "Here, you can HAVE these". To my surprise he hands me a set of Kicker Impulse 6 x 9's. I metered them and they both tested out at 3.9 ohms, so they're good to go. I'm going to put them in tomorrow if it's still supposed to be 50 outside.
Lucky me, though they do give me a lot of things I need for free.
"ZPA's will have the same sound essentially as you get from the MS, they just feature a bigger shinier set of balls."
Install:
http://phoenixphorum.com/viewtopic.php?f=10&t=16998