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.
https://www.us.mahle.com/media/usa/motorsports/sbm-flat-top-webpage-3.pdf
P.S. Enjoy the free 10-15hp your 360 makes with their fabulous 1mm/1mm Napier / 2mm oil ring package. When assembling you should be able to turn the crank with your hand with 4 pistons in. Compressing the rings can be a little tricky, take your time.