If you have access to a press and a good assortment of shop tools it is no real problem . There are different levels of re-build kits so be careful on what you purchase . Some just replace the roller/ball bearings and some offer the bushings too . Take a close look at the third gear syncro - this is a high ware item for the 465 and also you can up-grade the weak snapring on the third gear cluster to a full length spacer instead . Make sure the bearings you get are "maximum capacity" instead of std capacity - some re-build kits offer the std. bearings to make the kit cheaper.
All in all this is a fairly simple tranny to rebuild - it's just heavy !
HTH, Tom
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1984 K-30 w/ 292 / CH465-NP205 ( 32 spline )Dana 60 / GM 14 bolt - 1410 series u-joints / TBI
Pull truck: 2002 HD2500 4X4 Dodge Cummins Turbo Diesel H.O.
NVG 5600 Dana60/80 4.10's
