Leveling Kit on top of 5" lift

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I have search a little and havent really found the answer im looking for so here we go. I have a 99 1500 4x4 with a 5" sktjacker suspension lift and a 3" body lift. I am currently sitting on a brand new pair of 38.5x14.50R15 Super Swamper TSL/SX and the truck clears the tires fine at full cock in both direction with just a small amount of trimming to the front bumper. however Id like the front to sit a tad bit higher over the tires and was wondering if I could install a spring spacer leveling kit. Not sure if this can or should be done with it having a 5 lift already. Any suggestions.