Tried to get the car out this past weekend but it went downhill fast.

Here are I believe are the pertinent facts:

1. Small blk with Passon Alum 4 speed 6? years old, , 2000 trouble free miles, has sure grip, OEM tapered axles.
2. Car has seen no miles in 4 years
3. When car sits on jack stands, rear wheels and DS turn easy by hand when in neutral both ways, engine off.
4. Engine starts fine, pushing clutch in tranny goes into any gear fine.
5. When letting clutch out when in 1st gear on the jack stands, unless revs are brought up to say 2500rpm engine dies, and wheels still turn very hard/slow.
6. Pushing clutch in with trans still in gear and with wheels still turning, causes wheels to immediately to lock up.
7. Above is the same in 2nd but much harder to get wheels to turn, reverse the same, can't get wheels to turn without killing motor in 3rd or 4th.
8. I can get trans side cover shift levers into all normal? positions from below

Nothing indicates to me clutch/pressure is stuck.
Not sure if 8.75 could lock itself up. Everything goes south with trans in gear?

I'm at a loss, and am trying to eliminate as much as possible before yanking trans.

I have called Jamie and we are scratching our heads.

Any ideas?