gear ratio selection help

[rpainter]

My new winter project is going to be installing new gears in the puller. I currently have the nv-5600 6-speed trans,33" tires 4.10 gears and pull in 4th low range. I want to pull in 5th gear low and turn no less than 5,000 rpm's down the track. What is a better gear ratio 4.88 or a 5.13 gear swap?? Thanks

 

[SPEEDSHIFT]

http://www.corral.net/tech/gearcalc.html