I have a pretty stock 400 with a little modification...probably 275-300 hp...its a convertible w X brace...
I dont drag race it ,but drive it fairly fast 80-90 mph most everywhere...no need for more hp for me....I get to the places we go as fast or faster as the guys w more hp...plus I can use mid grade gas....

if I had too much hp, I`d probably get ticketed plus probably twist the h$ll out of the car