I have the following PPUs, but they are untested since I don't have a vs. board to check them with. Some are with ROMs too, but I have not verified that the ROMs are all there or that their checksums are even correct.
RP2C04-0001 - MDS-BA
RP2C04-0001 - MDS-HA4
RP2C04-0003 - No ROMs with this one
RP2C04-0004 - No ROMs with this one
RP2C03B - MDS-DH3
Feel free to shoot me a PM with an offer on one or more of these.
I believe the RP2C04-0004 is the one you need for Super Mario Bros.
RJ