Here are some illustrations from a Chevrolet parts and accessories catalogue that may help

 Here is an illustration of the correct one barrel Rochester carb for the 1967 CHevy II (from Chevrolet overhaul manual).

Also a couple of pictures of the original carb in a 1967 Chevy II.  I think the carb and mounting was very close or identical in 1965.  It appears that your carb may be a later or replacement model so you may need to make some changes to fit it.

Hope this helps

@headlighter Can you please email the illustration because it’s not coming out clear. I would really appreciate it.Thanks

gmduque323@gmail.com

@greg-mena  I've sent an email with the images.

I can take pictures of my son's 1967 Chevy II if you would like to see a particular area or view.