I've done this a couple of times with 4x5 paper negatives. I made the same image on to a 4x5 paper negative, and a 4x5 sheet of Tmax 100, and enlarged both onto 8x10 Ilford MG IV RC paper, to permit a comparison to be made. The first image is from the paper negative, the second image from TMax...
I shoot Ilford MG V RC at ISO 6. If you preflash the negatives, then ISO 8 is achievable, but testing would be necessary to eastablish the appropriate pre-flash time with your light source.
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