wide tires on a duster

I got lucky. I was driving down the road one day and saw some aluminum slot mags sitting on a guys porch. I slammed on the brakes and backed up the bus. After a bit of haggling, I loaded em up. They are 15 x 10 ET IIs. They turned out to not be the best deal I ever made. I had a machine shop bore out the center hole and press in a steel ring so that they would center on my axles. Oh well.I mounted some 295s on them for street duty.
My 325s are mounted on Wheel Vintiques 15 x 10 Rallayes.The rear end was narrowed to accept those with a 4.5 bs. I can now run nearly any vintage 10" wheel I choose.