My 200 block was cracked when I bought it for £150 on standard bore
I had the cracks fully ground out then welded up and the block decked when it was long studded
I had all 10 studs done
Also I had the block drilled and tapped into cylinder number 3 for the main oil return as this is supposed to be a hot spot on the cossie block
Not sure of the truth in all this but FMS does this on all there builds for that very reason
mark it's a inherent problem from when the pinto first started getting tuned on carbs LOL just back then 205 blocks were £30 or £100 for a full motor . Most 200 blocks share the same issues as the 205 and if the sleeve hasn't cracked it's the back bolt hole because it's with the fact the hole wasn't cleaned properly before new bolts or because the threads are right at the top of the block and the clamping cracks them. This is why 200s are preferred above 400 bhp as the thicker waist allows long stuffing so you are clamping from the bottom of the block so less stress on the face of the block so better clamping