as far as fit like I said before the old was ok and here's a better pic you can see how it covered the dual lines very nicely.

I should note here that my Olson pan is only about 5" deep in front and 6.5" in the rear. The sides are about 8" in the front and taper up to 10" at the rear. the same exact pattern as mine can be used with deeper pans just account for the longer sides. If the side panels are too tall they will tend to fall over and away from the block. My guess is stopping at the freeze plug is high enough