  We use $t, b, \tau$ Yukawa unification to constrain SUSY parameter space. We
find a narrow region survives for $\mu > 0$ (suggested by \bsgam and the
anomalous magnetic moment of the muon) with $A_0 \sim - 1.9 m_{16}$, $m_{10}
\sim 1.4 m_{16}$, $m_{16} \sim 1200 -3000$ \gev and $\mu, M_{1/2} \sim 100 -
500$ \gev. Demanding Yukawa unification thus makes definite predictions for
Higgs and sparticle masses.
