No way a small block with aluminum heads, headers, aftermarket camshaft, and aftermarket intake and carb could ever make power to 5900.
But...... there was that 30hp gain at 5300 too........ hmmmm.
Bahhhh!!! Who needs it.
Meanwhile, your car is a pain in the *** to drive at everything other than peak, because you sold out reliability and driveability for that peak number that you might see once or twice a year.
