Looking for some Trans parts
 

I have a 68 K10 with the following ...

Trans. case
D112
6
GM
3901127

and

New Process Gear
model 205
assem. no. 3987902
serial no. 3-10-72

I am looking for the following parts (new or used)..
1. trans case main top shaft (output) 10 spline
2. coupling for this shaft
3. input shaft for the NP205.

I tried NAPA but their parts catalog doesn't show anything.

Thanks.