Ok got the door clamped into position. The bullet hinges are a bit small. I'm going to weld on some wings
The next issue is the slam latch, it not so easy to get the holes just right. Plus you need to find the rivnut gun that has been lost for more than a year.
Plan B it's 10 times better. Take some 3" x .25 plate and drill tap on the bench and then weld on to the door and post.
Way better, if you don't like it super simple to move it too, if you just tack it in place. :)