340 on dyno video, whats your opinion

Some might be a stingy dyno, but it has full tube headers, no exhaust system, no fuel to pump, an electric water pump, and an aftermarket camshaft of some sort. Hard to tell given no info. But that's my gut anyway.
So somewhat like the way the factories tested HP in the 60's HP wars....no fans, no alternators, etc.... i.e., not what it will really be in the car.