CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the
undersigned officers of Sit Mutual Funds II, Inc., do hereby certify, to such
officer's knowledge, that the report on Form N-CSR of Sit Mutual Funds II, Inc.
for the period ended March 31, 2004 fully complies with the requirements of
Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information
contained in the Form N-CSR fairly presents, in all material respects, the
financial condition and results of operations of Sit Mutual Funds II, Inc. for
the periods presented in the report.

/s/ Eugene C. Sit                           /s/ Paul E. Rasmussen
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Eugene C. Sit                               Paul E. Rasmussen
Chairman                                    VP Treasurer
Sit Mutual Funds II, Inc.                   Sit Mutual Funds II, Inc.

Dated: May 27, 2004
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A signed original of this written statement required by Section 906 has been
provided by Sit Mutual Funds II, Inc. and will be retained by Sit Mutual Funds
II, Inc. and furnished to the SEC or its staff upon request.