If you are going to the expense of an engine teardown and rebuild, I hate to tell you, but the extra $20 or $30 per piston you pay for OEM 1st oversize shouldn't be a major concern. Either that or go for a used engine, if you can find one.
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.