Another ratio question 3.23 vs. 2.94

I currently have 2.94 gears with 28" tires on my Duster and as you can imagine it's not great off the line. The gears in my car now are in a 741 case I was thinking of changing the ring & pinion to 3.23's and later on getting a whole center section with 4.10's or something when I hit the strip. Would it be worth it to change my 2.94 r&p with 3.23s or just wasted $$$ in the end? Still want to keep a good highway gear for occasional road trips...