I'm currently installing my motor and driveline into my K5, and I wanted to finish my Dual T case adaptor before I have to cut new driveshafts. I started with: 1 TH400 NP203 Style 1 TH400 NP205 Style 1 NP205 for TH400 2 NP203's for TH400 1 TH400 -> NP203 Factory Adaptor Plate 1 TH400 -> NP205 Factory Adaptor Plate I took the measurments off the face of the 205 factory adaptor, and recreated the face onto a 3/8" plate. I then cut a 3/8" plate for the NP203 side, andcut the retaining ring for the aluminum housing that retains the 203's intermediate shaft and bearings. I also cut the slot for the anti-rotator shaft into this plate. I called WMS, and they quoted me $60 for machining the factory shaft down to the spec's I require. So far, for a dual Transfer case adaptor, I've spent $20 on steel, and will spend 60 on resplining. The intermediate shaft may not be *quite* as strong as the ORD solid shaft, but I'd say a Dual Transfer case adaptor for $80 wasn't a bad deal! The adaptor plate will be 3" Face to face. Bear in mind, I don't have to pay for labour, because I'm trading my labour (Aluminum TIG welding) for their machinework. I'll post pics as I get them coming. It isnt the prettiest sob, but it will certinally get the job done. I plan to replace the welded 3/8" version with a solid aluminum job like the ORD's once I find how my tolerances worked out for me.