All I want to do is fit my 275's !!!

[65fstbkNFB]

So I've been on and off battling to fit my 275/40/17's on a 17x9.5 wheel in the rear of my 65 mustang. I am sick of it rubbing under hard driving conditions or just bumps in the road. I've shortened the axle housing, messed with some spacers, and adjusted my axle side to side via my panhard bar. I am just now running into the issue of having enough room between the leaf springs and the outer part of the wheel well. My fenders are rolled and could probably be rolled a little harder for a tad more clearance, but not much. Running out of ideas and would really like to not have to go the route of mini tubbing or anything like that, but I also do not want to except defeat and go with a 265 or narrower wheel. Anybody out there have or know of anyone with a 64-66 mustang who has successfully fit this combo? I know its not that wide of a tire but if you know an early mustang, this is pushing the limits sadly, especially with leaf springs still. All advice/ideas/input is welcomed and appreciated! Thanks!

Nik