All the stock eliminator guys run 28x9, 29x9, or 30x9 slicks. Super stock was won last year at Indianapolis by a Hemi E-body running 30x9x15 Goodyears. Most of the faster Stock Eliminator guys pull the fron tires, run, very tall gears, very high stall speeds, wheels up, and all on 9 inch slicks.
I'd invest in a set of cal-tracs and split monoleafs and lose the pinion snubber and SS springs. Some places will ship for free if you purchase both at the same time. You'll also save quite a bit of weight.
Moparteacher