When you get the alignment done, have the front of the car lifted to the approximate height it will be at the 660 foot mark and have the alignment set to factory specs at that lift height. It is worth .25 to .50 of a second. You can also take the third leaf out of the rear spring pack and put them in backwards. This acts like a traction bar for Mopars and aids in lifting the front end, and can be used in conjunction to a pinion snubber if one like, but I never have.
