How many miles since it was installed? May be able to pull it apart to mill the block 0.050". In combination with mill the heads will bring the CR up, but the intake would need to be milled to match. Once milled you may be able to pop it back together.
With the new rings probably 50 miles. But I honestly don't want to break the whole engine back apart. I'd rather slap this one back together and drive the car. And buy a separate engine and do a 408 stroker build on the side.