I bought OEM rings from the dealer here ...........and guess what they are the same as the aftermarket I bought from another supplier.
The blocks are built incredibly well. You may want to consider having the crank lightened but thats about it. WHen you split it open you will be surprised at how well the block/bearings/pistons have held out....
Keep me updated.... we will be walking the same path.
Except I already have a Stage 2