Perhaps. But that would be harder than simply pulling the engine and working on with you standing up and the engine attached to a stand.I understand that the rings can be replaced without pulling the block.
If the problem is oil burning, then sure, valve guides and seals should be replaced, assuming you just pulling the head. A leak-down test will tell you whether the rings also need replacing. If it were me, I'd just do a complete rebuild because it's sort of fun, in a masochistic sort of way.what else needs to be replaced while I'm there? Valve guides or seals