Fitted up the B&M pan today, all went reasonably smoothly.
Cost a total of $568.23, Thats:
$384.95 For the B&M Pan
$36.55 for the deeper wide mouth filter with rubber gasket
$146.73 For 3 x 4L bottles of AC Delco Dexron VI from Holden
The only very minor issues I had were that it was a little harder to pump the oil into the new pan because the fill hole is recessed. I just had to bend the metal fill tube on my Tom Thumb hand pump.
The new pan, annoyingly, still had aluminium swarf left inside which i had to clean out, was trapped between the fins. I also disliked that you had to use thread tape on the drain plug and temp sender bung. But having a sump plug is worth it.
Also, changing the little seal for the trans filter is difficult, i scratched the surface it mates to and had to carefully rub it smooth again with some fine emery.
Removed around 4.2L of fluid from the original pan, and filled approx 7.75L with the new pan. A decent increase in capacity. Yes the pan sits lower, and is the lowest point under the car where it is located, so a high speed hump or similar would contact the pan before the chassis rails. For this reason I am considering making up something to prevent this from happening, will report back!
Would post pics, but thanks to photobucket blocking links I'm unsure how to do this now.