[sinkspur]

You said:

The church has always and universally held for the sacrifice to be valid the bread must be wheat and the wine must be fermented grape juice and both must be present

I suggest you read Ratzinger's provisions for alcoholic priests above. Fermented grape juice is not always a requirement.

[Flying Circus]

Two paragraphs down Redemptionis Sacramentum repeatedly refers to wine, which would indicate fermentation and alcohol. The stage of fermentation is not specified, but pasteurized grape juice wouldn't do. The wine may be of low alcohol content, but it should still be wine.

That also ignores what I was commenting on in post 17 where you said:
The Church could also make an exception, since the matter for the Eucharist is Church law.
Please excuse me if I misunderstood you, but in the context I read it, that sounds a lot like saying the rice wafer could be used instead if only the Church wanted to.
Would you care to clarify what you were actually trying to say?