If you can lower the truck without a big expense probably help a lot, , and if you haven't already switched to synthetics in all the drive train will make a difference, you've got a lot of spinning metal there, I would recommend you call summit racing and ask them about redline oil for the trans etc, cheapest place I've found , definite off the line improvement, the trouble with gears is it's all sliding friction so drag city , my first experience with the red line in the rear differential on the Ranger was an immediate off idle boost . also if you can boost your engine intake temp by rerouting the cold air intake big help there also , doing that today on mine. and last but should be first block the grille.
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