Those are both excellent choices above.
I have a 68 Camaro SBC with solid frame/engine mounts and run 1 7/8" Hooker Super Comps. You do not need to make any dents in the pipes to fit our chassis. I do have to lift the driver side of the engine and they slip right in. Power Steering and Power Brakes.
I also run an extension off of them as the "torque tube".
They helped make hp to 7000 rpm without a dip.