I'm thinking about lower gears in my truck. I have a TH350 NP208 14FF D44. I'm running 39.5/18-15 Boggers on 15x14 wheels. I'm getting ready to drop the wheels down to either 15x10 or 15x12. That hasn't really been figured out yet. I was just wondering if 4.88 would be too much? I have 4.10 now and a definate step up in ratio would help a bunch. Thanks.