Widest wheel width for rear??

[ImportSlayer347]

What is the widest wheel I can get on my slayer with stock axle lenght and not playing with fender lip. I would like to do 10's but I'm not sure if they will fit, and if they will what is the backspacing?

Thanks in advance.

 

[90lxcoupe]

10.5s will work, there are plenty of guys that have done it on here, try doing a search, im not sure about the bs, but i know that a 15x10 with 6.5 bs works well