Decking an LA is an absolute must. It is more important than a line hone (if youre not dealing with a spun bearing). Ma Mopar left the decks so absurdly tall and random and crooked it is a machining travesty. Skip the line hone and deck it to zero with these Mahle pistons/rings... These are the best value on the market bar none. Have your machine shop set the piston to wall clearance at the recommended values--these pistons don't rock much. Oh and they are superlight. J.R.