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Ahh okay,
I'll just post up the larger bolt info for any RL's looking for it :
12mm, 1.5 pitch, GR 10.9, 120mm length bolt (TT cars).
And for NA cars it can be 105mm in length
I would replace all the hardware, especially the small bolts. Mine were corroded and they are relatively cheap. Maybe you can remove one and verify the condition?