Do they just line bore the caps? I thought the block and caps had to be installed together for the line bore and you would be removing the same amount of material from the block and the caps. I am no machinist so please explain where my thoughts are off. I do realize that the job is only as good as the person setting up the machinery even with the best equipment money can buy. The last one I had line bored was a 1927 Buick and it had babbit instead of bearing inserts.