This is GM part# 12559525 and I picked it up from Dal Slabaugh
There are two pics of an factory alum shaft that was sent to me from
an Internet deal... (Yes, he can Pirate ideas, and rip you off,
while still maintaining his innocence and presence...)
Raphael Fernandez, aka MateoZ28( spidermens@mediaone.net )
Shaft is scored by an exhaust clamp bolt and I wouldn't use it behind my motor... or anyone elses motor for that matter..
It comes complete with yoke and U-joints installed and was a direct
bolton to my stock 10-bolt rear and 700R4 (1985 Z28). It is a full
3inch diameter piece and I had to bend my DSL in one location to get
enough clearance for the shaft.
Click on any thumbnail picture to enlarge