no more 5th gear, or reverse

[spdcrazy]

so i went to climb a few rocks in sedona. and i went to turn around and didn't have reverse. i could tell as soon as i tryed to stab it in gear that it didn't feel right. but i had it and used it about 5min before... i have no idea whats going on. but then i got back on pavement and noticed i had no 5th gear too... could it be a linkage? i tryed to reverse in 4 and 2wd... no difference...

87 b2. 2.9l 5spd.