I'm Tyson from Arkansas. I have Ford F600 I'm trying to fix up and have realized that some of the parts I have you guys use. I have a FDS75 and F106 rockwells with 6.20 gears. I am looking for a FDS90 and disc brakes would be nice. I also don't need that low of gear. I'm new to the world of truck pulling and am not sure I want to continue with my F600 4x4 project or chunk these axles under one of my cummins trucks. Any way hello all hope to make some new acquaintances.