Heh...Of course I'll let you guys know how the car behaves once I'm done, that's what my suspension topic is for. You're right about the 620s being somewhat rough, although maybe others would call it just plain rough.
The rear sway bar was very easy to install. I think I spent more time sanding, priming, and painting that thing than I did actually installing it.
And of course it was my first time doing ANY of this stuff. It MIGHT be possible to interfer with the exhaust, but I dumped mine, so that doesn't affect me. Even if I still had the stock exhaust pipes, I don't see it being much trouble at all to move them out of the sway bar's range of motion.
I'm going to buy the subframe connectors from MP. I'm most likely going to get these welded in:
http://www.mustangsplus.com/Merchant...ry_Code=subfrm
They're nothing fancy, but I believe these are the type that will give me somewhere to run my battery cable through. As far as I know, the tubular connectors won't do that.