Suppose I buy a extremely high-mileage truck and out a new crate 6.5 and 4L80 E?

Plausible?

Is it a package deal ?

prepared for all the other bad parts of an extremely high milage truck? worn ball joints, worn diffs, worn transfer case, possible sinking cab mounts, tired interior, the list goes on. My truck has 214k on it which i know isnt a HUGE number but its showing its age. The ride is not as good any more, it sqeaks more on bumpy roads, the dash is loose...

prepared for all the other bad parts of an extremely high milage truck? worn ball joints, worn diffs, worn transfer case, possible sinking cab mounts, tired interior, the list goes on. My truck has 214k on it which i know isnt a HUGE number but its showing its age. The ride is not as good any more, it sqeaks more on bumpy roads, the dash is loose...
At 215k, mine needed ALL of the front suspension bushings, ball joints and tierods replaced along with a new steering box. Also needed brakes all the way around and several other odds and ends. Unless it's a REALLY good deal (mine was), you can very easily end up with a lot more money in a high mileage truck than it's worth.