I am trying to install the modified style 1965-6 battery tray that uses the hold down from 1967-70. The problem is the battery tray does not want to go in, the holes do not line up. Looks like i am gonna have to modify a modified battery tray. Seems like the bottom piece might be welded on crooked, (made by dynacorn). Has anyone installed one of these on their 65-66 mustang? Trying to get this style of hold down so I don't have to run a battery with a lip on the bottom, plus the original 65-6 hold down does not seem like it does a very good job.