HOW TO USE A 15X8 REAR WITH A 4.5 BACKSPACE???

[rustbucket]

I HAVE SEEN WHERE SOME OF YOU GUYS HAVE USED A 15X8 REAR WHEEL WITH A 4.5 BACKSPACE, I AM READY TO ORDER WHEELS BUT AM VERY LIMITED ON CHOICE BY USING A 3.5 BACKSPACE, HELP ME OUT PLEASE!

 

[KAB]

that is what i have on my car
i have also used 3.5 bs
the 4.5 bs fit better