homemade adjustable c pilar brace 91 fwd wago

so the car came with a front strut tower bar, wanted to stiffen up the rear without taking out my sound system and using the rear strut tower mounts. so instead im making a c pilar brace. just did a quick sketch to show my idea. will post pics as i build over the next few days.
again sorry for the bad sketch and bad pic of the sketch hah
again sorry for the bad sketch and bad pic of the sketch hah

Comments
I would look into making an X Brace if you need to stiffen things up... You could still use the seat belt mounts for the top of the X
If your Not actually Racing and Cornering, then your just doing it for looks... So, your way could work too.
lol
Maybe consider a sway bar to manage your rolling.