Lost fifth gear for the second time in my truck. Needs a bigger clutch anyway so I will be replacing that with a southbend con ofe. The question I have is if a person can rebuild the NV4500 himself or if it needs to be rebuilt by someone else. Quad 4X4 has the kit with all tools, bearings and seals, small parts kit, fully splined mainshaft, etc. Just wondered if I by the manual and take my time if this is something I should try. The kit is only 1150. Truck has 225000 on it so I imagine it is time for a rebuild, plus I dont plan to pull it again. Any help and input would be appreciated.