ALWAYS as far as I'm concerned.
If you've seen one finish honed without, and then took it back and had it finish honed with a torque plate, it's a real eye opener when you see how out of round the cylinders are and how the first past doesn't even touch large portions of the cylinders at all.
Ran into this with a 455 I recently did, which was just redone by another shop. Paul torque plate honed it and the first pass was just absolutely horrible looking. Had to take another .002 to .003" off just to get the cylinders as best as possible without the need for new pistons, but there were still small areas the hone didn't touch. It became apparent right away the first rebuild was not torque plate honed.
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