1968 340S Coupe 4spd

About the frame connectors: if you are concerned about them being permanent fixtures -

Put in some of the old school square tubing types, Mancini sells them. These are pretty non intrusive and basically slip over the rear frame, and butt up to the front frame and then are welded. If someday you sell it - they can be removed without alot of issues, some grinder time would do the trick. I really cant imagine anyone (that knows these cars) being upset that it has them installed anyway. They just make these cars so much better driving, especially with a 4 speed.

My .02 !

Either way you have a very interesting car.

If it were mine I'd restify it. (Make performance mods that are reversible, keep the stocker stuff on the side, if you sell it.)

Either way you will have a very cool car at the end.