With 4.10 gears and a tire that has about 6.77% fewer revolutions per mile that gives you about a 3.88 ratio, figuring stock was a 235/ 75 15 on the 2000.
Tire Size Calculator - tire & wheel plus sizing
I assume the 3.73 had the 225's as stock?
Is the 2000 having breathing problems, in or out? I replaced the cat, fuel filter, o2 sensors in my 95 and it was like new. I did some other stuff but it all made a difference. It will make it to the redline now, the power flows. Before that it was a wicked dog.
I did all that around 128- 135K. It runs better with 146k now than with 66k when i got it.
Everyone said the cat should never have to be replaced. I am glad I did it. Though your mileage may vary.
95 Ranger Styleside SWB 4X4, 3.0, Auto, 4.10, 145,000 Miles
Century Cap, BF Goodrich All Terrain 30x9.50's, Reese Hitch, K&N Air Filter, Taylor Wires, Splitfire Plugs (I have had good luck with them), Bed Mat, Upgraded to factory alloy rims from "argent wheels", Cat, Dynomax Cat Back, Additional Battery Charging System, Transmission Oil Cooler, Grizzly Grill/ Brush Guard, Hella 500 Amber Fogs, Chrome Diff Cover, Nerf Bars, new bumper.
Upgraded to NH registration from Mass (Best upgrade!)
OEM Tube Rear Bumper, Tow Hooks, 31x10.50's, Larger or Additional Fuel Tank, Locker