Small blocks with that kind of HP sound real nasty and idle around 1,500 rpm. As much as I like sb Fords I am also realistic. Pump gas,very sreetable, no power adders, 540 HP I don't think so.
I have heard 475 HP 289's run with open headers and they are the loudest and nastiest motors you ever heard.
My $1.00
Cranky
