[obijuan]

since the 205 is super common and this is a good resource ill add what i know to be true. please feel free to add your input.
keeping this to 69-72, 73-87/91 big body pickups


ALL crew cabs were fixed yoke.
regular cabs with carrier bearing were fixed yoke.
post 1985 np205 regular cabs are slip yoke.
all 1980 tcases were 205s. most slip yokes.
all rear output shafts are 32 spline. fixed and slip.
both slip and fixed yoke can be swapped with just removing the 8 bolt housing and removing as an assembly. also between chevy ford dodge and international. speedo and breathers just change.
vss introduced in 1990.
all 205s were figure 8 front pattern until 1985.
1985 introduced the round pattern 205.
i think 73 the speedo cable moved to passenger side.
several assortments of shifter styles.
1985 also introduced the W and S crossmembers to be used with short adapters and one piece rubber mounts.
pre 1985 one ton 205s had a flatter crossmember than 1/2 and 3/4 tons.
pre 1985 1 ton crossmembers went INSIDE the rails.
pre 1985 1/2 and 3/4 tons went below the rails.



the common/early sm465 version of the 205:
figure 8 pattern face
ten spline input male
small input bearing
ten spline front output if it has the spicer CV.
30 spline front output for the later flanged cv front driveshaft.
uses the taller two footed adapter

the other/later sm465 version of the 205
found post 1985
round pattern face
32 spline female input gear. with the BIG bearing case.
LONG input gear, around 4". not short th400 style.
30 spline front output flanged
uses the short foot adapter with one piece rubber mount


th350 version
27 spline male input gear.
small input bearing
figure 8 pattern only offered.
tall adapter.
can be used to put behind a 700r4.


early th400 version
figure 8 pattern face
32 spline short input gear, 2" ish.
large input bearing
strongest for offroad applications especially doublers


later th400 version
found 1985 and newer
round pattern face
long input gear same as later 465 version.
same large input bearing
30 spline flanged front output.
this is what you want for putting it behind an nv4500.
use a pre 1985 short th400 input gear if you dont want to use the advance adapter spacer. but thats a whole nother can of monkeys.

4l80 version
1991 only
round pattern face
large input bearing
does not share same adapter as th400.
has its very own adapter
same long input gear
VSS


ford international and dodge np205
they have a 32 spline front output shaft
these all swap over to GM cases to enable larger/better yokes to be installed.