With a MSD dist. your able to adjust the power curve by changing the different color springs and bushings.
http://static.summitracing.com/global/images/instructions/msd-8464_instructions.pdf

[img]http://www.imgur.com/hxlGUJt.gif[/img]
4-speed
3:54 Dana
13.01 @107.93 with street tires (not hooking up)