295/40-18 on the rear of a 2nd gen Camaro

[JSharpe]

I have a 1971 Camaro. I have been running 285/40-17's on 9.5" wheels on the rear. I am thinking of going to 18's now. Does anyone know if a 295/40-18 on a 10" wheel will fit in the rear without mini tubs? If so, what back space would you recommend? I also want to run a 245 or 255/40-18 on an 8" wheel in the front. what backspace will work here? I have coilovers, so I am trying to get the front fairly low, while still being able to turn without rubbing. Thanks for the help. Jonathan