So I'm in the process of rebuilding a 2.1 L 89' Vanagon engine. The cylinder bores have pitting in them and definitely need either replacing or boring. My ever so difficult question is if I have the cylinders bored, is it fine to use the stock pistons with oversize rings? Or would I need to use oversize pistons as well. The cylinders would have to be bored out by ~0.25 mm (0.01") to take out a large pit in one which is causing abysmal compression and oil burning.
I know this is probably a long shot, I've spend a bit over an hour scouring google links to find an answer with no definitive answer and called a couple mechanics with no definitive answer, so I figure I'd ask here before I start making accounts on auto forums. Never know, maybe someone knows.