Tips wanted

A good welder can fix that but it might be cost prohibitive. Like mentioned above, some crack stops should be drilled on either end of the crack. Preheat the manifold and weld with nickel rod. Its also very important to let it cool very slowly. Covering the manifold in sand is a good way to let it cool evenly.
That being said, you can get this manifold for $130 shipped. I bought one of these but have not used it yet. Looks to be decent quality for the price. Fit could be another story but for the price it was worth a try.
https://www.ebay.com/itm/Exhaust-Ma...kup-Van-Car-/143216769026?hash=item2158627802