I searched but couldn't find an answer to this, as the title says do the 4AC clutch and gearbox and diff in a sprinter hold up when used with a stock 4AGE?
Clutch = not really, but a heavy duty upgrade item is cheap - mine cost $150, and is perfect for any stock 4AG. Easy to use, and loves the abuse. Gearbox = the same - i.e. breakable with brutality, but normally alright. Diff = much the same as the gearbox really.