You have several factors going on by changing tires and wheels, but saving weight is always a good one.

1rst factor: Weight is directly related (inversely) to acceleration
Force = mass x acceleration
Your total weight = 2915
If you cut weight by 60 lbs that is (2915 - 60) / 2915 * 100 = 97.9% of your original weight

100 - 97.7 = 2.1% decrease in weight which directly relates to a increase of 2.1% in acceleration
This part alone should increase either end velocity by 2% (= 117.8 mph in 1/4mile) or decrease time by 2% (= 11.90s in 1/4 mile). One negative factor to increased speed is increased air resistance, so not all of that 2% can be applied.

factor 2:
Kinetic energy of flywheel = 1/2 mass[mass at a given radius] * Velocity squared

Your tire is in effect a spinning flywheel. It takes energy to spin a flywheel up to speed. By cutting down on tire weight (especially perimeter weight) you decrease the energy needed to spin the tire to the same RPM as a higher weight tire. This energy is quite significant, maybe even more than the loss of mass that increases acceleration directly, from factor 1. If you want tires for racing only, use the lightest tires possible and smallest radius.

factor 3:

You didn't give the actual outside perimeter of your tire dimensions. A smaller tire in diameter also amounts to less travel per revolution of tire. A tire 2 feet in diameter at crown amounts to perimeter of 6.28 feet of travel per revolution. A tire that is 1 foot 10 inches in diameter = 5.76 feet of travel per revolution.
So the smaller the tire diameter the more easily it is accelerated (giving in essence more starting torque or a lower gear ratio) bu the actual travel is smaller than the larger radius. The only way to make up for this is more rpm's.
For example , using tire above, a 2 foot tire turning at 2000 rpm = 12,560 feet per minute or 209 feet per second of travel.
A 1 foot 10 inch tire at 2000 rpm = 192 feet per second

If you use the smaller tire, you have to increase the rpm by this much:
2,000 rpm/ 192 ft/s = X rpm/ 209
x = 2,177 rpm
So to go the same distance in the same amount of time you have to run your motor 177 rpm faster. The good thing though, is it is easier for your engine to go faster, because a smaller radius tire also is a lower gear ratio effect to your engine so the load is much lower and torque and horsepower develop faster.

To sum it up...with the lower flywheel effect and less weight you could easily shave up to a 0.5seconds from your 1/4 mile time and add maybe 3 mph to your top end.