LOL! I can't help myself... I love to do research and analysis!

 

hey guys, i need more gear, been running the stock 4,11s in my 2001 , i ate up 4 trannys cause the builder sucked, then i had R and R racing trannys in upstate new york build me one and it is awsome. i hat the tork converter built with the 6.0L torington bearing, ant the tranny built with extra cluches and some bad *** B og Warrner cluches and chift kits, all and all very nice, but i need to start pulling trailers very heavy any idea on the size gears, every one says 5.13 they r 44in tall tires, off a semi, 285/75/24.5 rims

 

Sounds like you do need the 5.13s, and make sure you have a D60 front axle, some '01s had just a D50. Also, best to start your own thread in the future.