My 1980 Toyota 5 speed PU was stolen in S.F
the police just called me to pick it up. they said some homeless person was
living in it.
 I towed it home and found that the hose from the master cylinder was cut so
I replaced it. the fluid was drained out of the larger fluid container .I
have an oil leak under my clutch pedel that was there before the truck was
stolen, and I had to add fluid often. my clutch was also replaced a few
months before the truck was stolen .

when I engage the gears  the truck will not move
any suggestions

P.S while surfing the net I found this info...
How to replace clutch master cylinder for '80-'91  vanagon
http://www.type2.com/bartnik/clutchmaster.htm