5on5 axles from 76 into 67

[kevncar]

I have a friend that will give me the 5-lug axles out of his 76 (he has already given me the front suspension...complete control arm to control arm) Will these axles slide right into my 67 12-bolt rear-end? I've seen "conversion axles" like those offered from ECE, so I'm assuming it won't be this easy, but I was hoping maybe they could be shortened or something cheaper than conversion axles.

Thanks