Originally posted by Ryan80
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If you want a longer ratio box that's a relatively easy fit then I'd go for five speed 01A gearbox from a 2.8 30V ACK engine C4, code CKF, rear diff code DJT and is 4.11 final drive. It's geared for an engine that produces 197BHP but only revs a little higher so will give a 2.6 car slightly longer legs without bogging it down.
The six speed from a B5 Passat 4 motion will probably be a total pain to make fit, is it even an 01A if it's a six speed? Plus 4Motion isn't quattro so I have no idea if it still uses a Torsen center diff.
The sixth gear on a lot of VAG cars from this period are not designed to increase the top speed, they're normally only slightly taller than fifth and intended to help with economy.
Both will require custom side mounts but the C4 box is a better match and much easier to make fit as you can still swap the drive shaft flanges around.
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