Can someone let me know if this Rochester will fit on my 1968 350 automatic? Also, are the various Rochester carb model #'s for any Chevy/Pontiac, late 60's early 70's 350 motor, okay to use on my car?

Thanks for the help.

Here's a link to help you. Try to find a carb as close to your year as you can so that the choke will work. That carb you asked about isn't for a Pontiac. The list at the link is Pontiac only.

http://www.thecarburetorshop.com/Kpontiac3.htm

This is a 70-74 Cadillac QJet, choke, throttle, and kickdown hookups may not be the same. It will physically bolt onto the manifold without issue.