Transmission locked up - please help

[jonahboo]

So bringing home a new to me 1953 Ford F100 Panel....i made a terrible shift from first into (you guessed it) Reverse...the truck bucked and jerk before i could remedy my error.

Had it towed home

the shifter has no movement

feels like stuck in R but truck stalls when clutch is out

the driver allowed me to disconnect rear of driveshaft so to roll off

i disconnected the linkage
the forward most shift ta
b has some movement - but even with someone in car pressing the clutch i cannot get it to travel thru gears
the rear really has no movement

driveshaft has no rotation, nor "wiggle"

any thoughts are greatly appreciated