Is it not true that a bored 200 block is no better than a 205 anyway ?

My engine runs liners only due to the previous owner having a bit of a meltdown once.

I know of 2 500bhp engine running liners that have not been apart in 4 yrs, except for a turbo and one headgasket.

I dont know anything about liners or what they all look like but aren't some stepped at the top to stop the liner from dropping in the bore ? I have seen a picture of linered xe block where a unstepped liner dropped down and hit the crank

Some info on this would be good