1350, 32 spline, U-bolt yoke.  This yoke is typically found or retrofitted onto Atlas and 205 transfer cases.  It fits most Advance Adapters outputs (NP231 SYE, D18HD, D20HD, D300HD).  It uses U-bolts to fasten the u-joints instead of straps. 

WARNING:  Count the splines on your transfer case!  Not all 205s came with 32 splines!

If you're swapping off a yoke with a smaller seal OD, check the OD of the seal below.  It will save you some time at the parts store explaining the Frankenstein situation ; )
 

Specifications:

Yoke

• U-joint size:  1350, U-bolt style
• Seal surface OD:  2.125"

U-bolts (not included)

• U-joint size:  1350
• ID (inside leg to inside leg):  1.33"
• Diameter and pitch:  3/8"-24

Spline seal

• Number of splines:  32
• ID:  0.90"

Seal (not included)

• OD:  3"
• ID:  2.125"
• Thickness:  0.375"

U-joint (not included)

• Brand:  Spicer
• Series:  1350, 5-1350X lifetime (non-greaseable) or 5-178X greaseable

For the new and improved design order PM3112-5015.