The first question is this:

What happens if the top of the strut tower rusts out completely and the strut mount lets go? Is lose of control a certainty?

Second question:

Is there an after-market cap for the strut tower of a 2002 Galant ES? If so, how do they attach to the vehicle? Bolt on? Weld?

Third question:

If there is no after-market cap, what's a decent price for a repair? A local welding shop said that there is no cap for that model. They said that they can repair it for $100 - $250 per side depending on the extent of the rust. That was phone quote, I haven't taken the vehicle in yet. $200 total sounds reasonable to me, $500 would make me wonder if the vehicle is worth repairing. (The strut towers are not the only problem with this vehicle)

Any information you could provide would be appreciated. Thanks!