Max. borehole 827 engines

Hi guys, I’m on top of what I’m doing with my engine instead (P.S. I know the V6 is easier, but I’m talking about the individual) I just wanted to know what the max. bore of the cylinder in the 827 engine block (ABT/AAAE/ABK) is. I know that the costs are not in proportion to the result, so I don’t want to comment about the new car etc… Also I want to say that I want to tackle all this as a long-term project, with a 2t engine. the target must not be 150hp now I’m only talking about more displacement, the power is still coming but for that I need the basis for the expansion of the displacement in order to be able to further palnen/want