Drag Wheels (back spacing)

[sn8kbite]

Anyone running weld pro stars or another drag wheel on their cobra witha solid 8.8 rearend?
If so can you tell me the proper backspacing? 5.5 or 6.5?
also on the skinnies up front what size wheel and what back spacing is needed?

 

[JaketheSnake]

i have draglites with 5.5 bs no rubbing