Motor mount question...

You might be able to. The passenger side is the same for a bunch of years, 273, 318 and 340. The driver's side is harder to come by. It was only used on 68-72 340 cars. I know that Bill Cowger usually has a set for sale, but I can't find any of his ads right now.

Some people will tell you to use a 318 mount and use washers to space it out. I've done it before, and didn't really like it. It is an option, though.