Yes single is sold mate, and no, no balance shaft
Sounds like a second hand box might be a good idea mate. As you said, oe diff is nearly as much as atb :S
Had this exact problem with the bosses sons Cup. Checked everything. After much head scratching we eventually discovered the nearside wishbone, rear mounting bracket on the subframe had a fatigue crack all the way round. A casual look would have missed it, it was only when I applied a pry bar that you could see it open up. Unfortunately, it was'nt really weldable so we had to fit a second hand subframe.
Has this problem been resolved yet?
Weird i ve got the same issue , mine only started after fitting new tyres so i had them balanced again and again still the same . Tyres have also been off and checked .
Judders like mad when you accelerate over about 50 ish , at about 80 there is a slight judder but the car feels REALLY unstable . Possibly a manufacturing defect on a tyre??
Have you slipped this gearbox in yet J?
Need to know if its cured the vibes, the suspense is killing me!
Glad to hear its all been sorted mate!
If you don't mind me asking how much is a service exchange box mate?