Build Sheet checks for 1976 models.

http://www.stockmopar.com/mopar-vin-decoder.php

I've used these guys before, you just type in your info. from your vin and it decodes to the best of their info. I found it pretty good really considering it's just an online decoder. As far as the build sheet goes i'm not sure, someone must know?? hope that helps, i know it helped me out a fair bit.