Looking at 2 frames on eBay, an attack trail & mount vision pro. I need to know what the eye to eye measurement is for the rear shock on these and if you can run rear disk brakes. The description does not give the measurement for the rear shock. The description does list V-brakes for the rear brake. My son broke the rear disk brake mount on his bike and looking to replace his frame and the 13.5 Mount vision pro looks great for the price, I just want to know if we can swap his components over, particularly the rear shock & brake.

Thanks for any feed back.