GM67
axle tube GCC0591

casting number 3969277 NF

This rearend is a c-clip

54 1/4 from flange to flange and from axle to axle it is 61 inches

I am thinking this is an 8.5 rearend but not sure.

http://s242.photobucket.com/albums/ff277/btroy89/rearend/

I am wanting to see if this will fit in my 67 GTO without mods.

Troy