How likely is a crack in the block after overheating of the engine?

Hello guys, how likely is it that when the engine was running fast and overheating the block was torn and not “only” the ZKD burned through? My car was now standing in the workshop since October, after I had the box on the highway boiled empty. Diagnosis of the towper – “ZKD durch”. Then I got all the necessary parts and brought them into the workshop. ZKD, stretch screws, WaPu, timing belts and all the stuff. Now the cart cooks after 1.. 2 minutes always Now, of course, I am thinking about whether I should sell the pile as a hobby box or take even more money into my hand. If the block has a crack, then I would not get around a new engine as well as the reassembly of the new parts like WaPu and timing belts. If a crack in the block is very untrue, then almost “only” a warped head remains, which could be changed comparatively cheaply. The car only got new HU and new brakes in front shortly before the defect, the climate has been filled and otherwise also a lot has been renewed. Would now be a pity. Would be grateful for experiences, tips and theses.