Personally, I would not spend my money on tower strut bars. Though the Tour is not a very stiff uni-body, you have to look at the strut location ascompared to laterial bulkheads such as the firewall. The real problem with the Tour is the twist between the front and rear of the car. Jack your car up and you'll see what I mean when your front doors don't open properly. The front towers are close to the firewall and the rear towers are close to the moderately stiff trunk bulkhead. I can see a strut bar on a car where the towers are further away from the firewall such as a Mustang. Purchasing the struts, in my opinion, is more for looks then performance.
If I had $300+ to spend on performace I would buy an Aussie or BAT bar or save for new struts/coils. If your already there then look at the other many engine mods.