is this block reusable?

ok so..continuing from http://www.rs25.com/forums/f128/1957...ns-help-4.html

i bought another sti engine from japan...and 3000 km later it started overheating...stopped and found cooling system to have only 2Lish of coolant left.

refilled the system..continued driving and it never leaked...then i found out it only leaked under high revs/boost so i had the cooling system pressured tested...

found the radiator was pissing coolant at 1 bar, replaced radiator

car still pissed coolant under high revs/boost... thought it was headgasket

garage diagnosed to be the headgasket as well so they took engine apart and found...the bolts that hold down the cams were loose, after they took out the bolts coolant sprayed on them somehow





then... the engine block




so now, they have concluded one head is warped, one head is cracked and the engine block shouldn't be used

they found another ej20k sti engine for me already but which parts you guys think are reusable for a further engine build?