I am sending a 70 454 to the machine shop to be stroked and bored ,it has oval port cast heads ,I am not racing but want a torquer engine ,should I keep the oval ports .I was told these make more low rpm torque I will be running a built up 700r4 and a street cam ,I have a buddie with a set of rectangle port heads he said he'd trade if I need them ,I was told for a street eng ovals would be better,both will be port and polished (my buddy does em for free)its all going into a 69 Nova SS,wouldnt low rpm torque be better for the street ?