Help Me Identify This??

[mccarthy500]

Is this transmission a 915? Its for sale by a private seller he's asking $1000 but i could probably talk him down quite a bit. he claims its off a 76' porsche 911 and posted the following pictures.




Is this a 915?Also what type of things should I look at when I go buy it? what are things that will let me know if its no good etc.?

Thank you guys for your help. - John