[Melzer]

As tnlprt indicated, a larger left tire circumference could possibly affect and cause your problem with pulling right under hard throttle.

Another item you might want to check are your motor mounts and the frame possibly flexing (or racking) under torque.

If my memory of physics serves me correctly, when power/torque is applied to a normally aspirated motor, a rotational (mass) force is exerted that tends to throw (the rotating mass) of the engine to the outside (to the right) under normal conditions, this will be observed at the right side of the vehicle (passenger) side being turned or "rotated to the right"on it's axis as you apply more throttle/torque.

Motor mounts that are loose or not properly fastened could allow the transfer of all that torque to the (outside) mount, thereby causing a substantial twist to the right. The suspension geometry has now become compromised with the left front/rear unloading contact with the pavement.

Obviously, this is not a go either with respect to handling or safety.........check this out!

There was once a time that we raced circle track modified's. To illustrate this torque rotation to the outside (right) one racing team was discovered after many years of using a reverse rotating motor (counterclockwise) from former twin screw application in a boat. The result? The harder the car throttled up in a corner, the better it stuck, because rotation (mass) of the motor was thrown to the inside left side - allowing the car's left side to become loaded with the harder the motor pulled - the better the car stuck to the track.......of course, this would only apply to circle tracks with continuous Left turns

Hope this was clear........clear as mud, right??