I haven't had issues with aftermarket pistons or rings and in fact the NOS rings will be a one piece oil control ring whereas the aftermarket are 3 piece. The three piece works much better with less drag.
I have seen some variation in the ring gaps so it is important that the gaps be checked and adjusted as necessary.
There probably are one maybe two manufacturers of the aftermarket rings so pick your supplier and go for it.
Will the Wiseco rings work with factory pistons, or only the Wiseco pistons? Those are readily available and I've had good luck with Wiseco stuff on other projects , but sometimes aftermarket "custom" pistons don't use stock ring groove thicknesses. I'll go with the disaster motors ones otherwise.
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