Is there replacement strut towers out there?

Repairing the strut towers is not technically feasible. Possible yes, feasible no. You would need a factory type jig the hold the front end pieces in place when the strut towers were welded back in place. Without the jig to hold things in place, the body and steering would never be straight.

its done all the time, the patch kits are available on-line
 
its done all the time, the patch kits are available on-line
this thread was started in 2011 and then bumped in 2014, look in the upper left corner of the post for the date, but yes it is possible to repair/replace the strut towers, not for the faint of heart. Lots of measurements and welding and more measurements and more welding.