Hi fella's ( and any female members !! ),
Just joined tonight after searching for tuning tips/ideas for my Marea 147 20v.I came across this thread and thought I would add to the discussion.
I bought a Turbo box with a view to fitting it to the Marea for the benefits of the Visco drive, hence to say it's a completely different box and the gears would not be to the Marea's liking anyway
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Something good came of it however, as my brother has a 155 V6 with a 156 6 speed box ( fitted with a quaife LSD ) and he wanted to check out the turbo box.
He brought his standard 156 diff and final drive down to mine. I took the diff/final drive out of the turbo box and we checked the teeth on both final drives and they where the same, as was the cast number 7783659. So where the cast numbers on the diffs - 7783660.
So, apparently, a standard Alfa 156 V6 Q2 LSD should fit into the turbo 5/6 speed box .
Hope this helps someone