2000 Legacy L; the plastic cap/mount portion of my manual antenna is busted and my antenna is stuck in the extended position. While trying to adjust it, I found one of the bolts rusted and broke so now the unit is only held on with one bolt and the antenna mostly out. Furthermore, the area around the bolt hole is rusting too. I want to address this.
I noticed the higher trim levels of wagon and Outback use a antenna rear left cargo window. Probably not worth the effort to retrofit (is it even possible?), what would be the best way to fix/replace the antenna and rust issue? I have also thought about getting an internal amplified hidden antenna, whether its windshield mounted or hidden somewhere in the car.