I feel your pain buddy. About a month ago I lost oil pressure because the pick up screen was clogged with crap( not really sure what). Anyways the gist is I broke a rod and ruined a piston. So I know how you feel. I decided to bag the 400 and build another motor instead. You might want to consider shopping for a replacement motor for your car. You should be able to find a low mileage replacement for a lot less than a rebuild would cost. You can rent a lift or better yet borrow one. Take your time and take lots of pictures. You can pull your old one and drop in a new one. And I'm sure your son would love to help. Definitely a bonding experience. Things like that tend to last a lifetime. You'll be back on the road before summer's gone. You can do it!