2003 Acura RSX my short block engine will have to be replaced

2003 Acura RSX Type S// Completely stock version // No after market Modifications // standard transmission // 4 cylinder engine// 71,000 miles. I was told by Honda after taking it in for hearing a deep knock noise when I shift gears that my short block engine will have to be replaced for $5,687.53 due to Rod Bearing // Balance Shaft Noise. Can anyone please tell me if this is needed? Is there something I can do to salvage the engine or do I absolutely have to purchase a new engine? Thank You for any assistance that is given.