Bingo! MOST LA motors need bored, the decks are all over the place front to back side to side. MOST magnums never need bored and the decks are even Steven, they are right at 9 to1, LA,s are all over the place usuall quite low for compression. So your LA now needs bored and decked and a set of pistons to get somewhere. If a cheap 9 to 1 motor is your sights I would do a magnum, preferably a 5.9.