I don't have any first hand experience with the Aviad pan, but...
The rear cap on the Dart blocks is where you will most likely have interference, if at all. The cap is now machined with a large chamfer on the outside corners to give more clearance for the pan and
oil pans designed for 2-bolt caps will often fit without modification. If it does interfere, you can either grind a bit more off the corners of the cap or hammer the corners of the pan out a bit; it doesn't take very much. Hope this helps.
jack