Do I have to re-balance this 360

well swapping in the trw forged pistons worked without a rebalance cuz trw was smart and made the pistons the same weight as stock. and back in the day when I was thinking about a quick 340 rebuild involving changing pistons, I talked to Ed Hamburger the small block mopar guru, he said as long as the weights are within 10% go for it. the new pistons were 11% different so I went for it and with solid engine mounts she ran great for years