yes, mid 80s van used the 833OD 4 speed and was a mech linkage.
some mid 70s vans had the 3 speed manual trans as well.

the shifter was bent forward as it sat a little back in the floor next to the driver seat. same truck shifter just a handle bent in reverse.

some of the mid 80s truck mech linkage will work but the van does have some van specific pieces that need to be found.

you could convert it to hydro clutch with some of the 88-93 truck hydro parts. such as hydro bell/MC/slave cyl

on van linkage any of the /6 linkage would be the same as only the bell housing would change.