I'm with you. Here is a F body tail shaft that's been modified. Not sure how I feel about it. Maybe some stiffening ribs and / or T case brace(s).
Project Standstill: The AWD/LS1/T56 Blazer - S-10 Forum

 

Ok so Im actually going to try something different. If it holds awesome and if it doesnt then ohwell Im making 2 adapters and using the stock 27 spline c5 output shaft. The order is : ls1 bell, ls1 mid, c5 zo6 trans and output, adapter, stock 4l60 4x4 adapter, another adapter then t case. Im setting the stock adapter in the factory distance for the crossmember. Only major mod is shorting rear ds, and lengthing front. Reason being? I dont want a one off hybrid trans. I can always swap in a 9310 stock main if it fails. Custom driveshafts are easier for me.

 

Also, this is a dd. Not a 1000hp 4 wheel slick drag truck. I also dont tow or haul and its a single cab. I will start machining everything in about a month and will promise pics soon! I talked to nicD he says he will have no prob getting everything to play nice together.

 

Subscribing for pictures and final result!

 

Sounds like a good plan. Can't wait to see this.

 

last i heard was that there were a few in 07, in case you ain't found parts yet
and where were these cool goodies for t-case adapters when i was looking to do this 8yrs ago?! now i'm looking for a D-max, so i'm still fighting myself to justify going ahead and camming the truck i have