SM265 mated to a 203 ????

[tylerdurden]

Ok I have been through the searches and could not find a answer for my questions. First I have a sm465, that came out of a early 80's 3/4, which has the 35 spline count output shaft. Secondly I have three 203's, which two have the aluminum output shaft case from late model 70's 1/2 th350 vehicles (27 input spline). The third transfer case has no tag but has the cast iron output case.
Ok my questions are as follows:
1. Which transfer case is better, the aluminum output case shaft or the
iron one?
2. Where can I look for an oem adaptor for the sm465 to mate to the 203?
Because, I know an aftermarket piece will cost a pretty penny.
3. Which one do I need to modify? For the two to mesh together?
I want to make a doulbler once I find a 205 down the road.