As far as rear, True Prostars for 98-02 Fbodys go. 10 inch rim is 7.5 backspacing, thats whats on my car , with moderate grinding. And for an 8 inch rim its a 5.5 , with minimal grinding. Hope this helps
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99 Black Formula, Twin Turbo sold
01 SOM Firebird. Daily Driven, 9's---Sold
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