Dan,
Easy answer: yes, a 24-25" cheap glasspack will work in there for you. That's what I have on my car right now. As a matter of fact, it is even clamped in there, bridging the gap (including the offset) left by the stock resonator.
But am I happy with the setup? No, not for an instant.
I needed a quick and dirty setup after I decided that a straight pipe was too loud and raspy. So I threw in a $20 glasspack with clamps, etc. After a year the setup looks like the junk that it is. Road salt shows no mercy.
My long term solution is to weld in a Magnaflow resonator. BTW, thanks, Aussie, for hooking me up with a beautiful stainless Magnaflow. This is the way I should have done it to begin with. Don't be fooled thinking that the right thing to do is replace a stainless stock resonator with a piece of junk. Yes, it will work for now, and yes, it's cheap, but think about the long term here....
-Kurt
