It will make a significant difference. Before the change in free wheels, I spent most of my time in 6th and 7th cruising on flat ground. I would spin out on any steep downhill. After the change, I cruise in 4th, 5th and 6th and use 7th for those steep downhills. I don’t spin out.
I bought the freewheel from Walmart.com.
A special tool is required. I purchased the Park Tools FR 1.3
https://www.parktool.com/product/fre...remover-fr-1-3
The only other tool required would be a 1 inch socket or box end wrench to turn the special tool.
The process is simple:
1. Remove the wheel.
2. unscrew the axle and pull out of hub. Note the orientation of the springs.
3. Insert the splined portion of the special tool into the hub. Use the socket or wrench to loosen the freewheel. Turn counter clockwise.
4. Keep spinning until it comes off.
5. Put grease or anti-seize on the threads of the new freewheel.
6. Carefully screw the new freewheel on to the hub. Take care not to cross thread the new freewheel. It should spin on easily.
7. Use the special tool and wrench to tighten (clockwise). You don’t need to over tighten.
8. Reinstall axle and mount wheel.
It took me less time to complete the install than it did to type this.