New life for an old 340 (stock stroke)

As we can see from the dyno sheet the engine is not done yet at 6900RPM since power is still climbing... did you take it any higher than 7000 to see what the power curve would do? Or not worth it for a measly 2Hp more and more stress on all parts?

I turned it higher and it was down 4 hp @ 7000 as it heads downwards gradually. J.Rob