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I run a pro-stock in okc.The promoter has changed the dirt,slimey slick in heat race,hard and cold in feature takes no ruber. stock chasie to centerline of rear end (76olds cutlas)3 link rear end,stock lower,center pull bar no biscuts allowed(down hill) long track bar rt hand frame mount.3100 pound car. springs rtf 1040 ltf 900 rtr 175 ltr 200. about 500 hp.shocks frt 953s rtr94 ltr 93.goodyears 29.10s duro.about 56 (track tire)54 left 53 rear 47 cross.Icant get the cross to change.Sujestions?
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