340 valiant build advice needed.

I do believe the early 340 was advertised as able to rev at "6000 rpm all day long" for $2800 bucks or something like that...there was a 69 and 70 Swinger 340 ad that stated such. I wonder if the later 340 still claimed to rev high...another thing to point out is throttle response and how quickly the engine revs to that point etc. but my point is build it to stock specs it should still be a ripper...