^ Rear Sway only. That's where you're oging to get the biggest improvement.
And a good Upper Strut Bar should improve the crispness of turn-in. It's not overly noticeable, but when you tug the wheel you should feel a sharper response.... I did.
This.
As for the RSB, search TL RSB and you will get the part numbers and everything. The whole setup can be had for under $45 shipped. Thats' what I got it for from Curry Acura anyway. Easy, cheap mod that makes HUGE difference.