I am a little thick....this means you want to know the ratios and center distances so you can CHANGE the overall final drive ratio up/down 10%? That what you mean?
Change the gears to increase my top end speed. It's usually listed something like 15/47 (small gear/big gear that turns the rear wheel)
Sometimes these are called gear up kits. I think my issue is that my gears are a little larger than average so adding a typical 10% kit could be 20%.
Just want to make sure before I buy parts and pay for the pressing
This is the video shows what I am talking about and I added a picture