We seem to be at the point to answer some questions.
The reasoning behind the aluminum pan was simple, better gasket. Steel pan led me to believe it was leaking, and no matter how much I tried..I couldn't get it to seal. Once I pulled the engine..I found the rear engine cover to have loose bolts. Now those were most likely the leak and not the pan to block gasket.
1. As Andy mentioned, the oil drains completely. I've harped on the L36 failure folks to remove the pan because there is about 1/3 of a quart remaining due to plug location.
2. The pan is quite strong, in 2000+ the motor mount is bolted to the pan, not near...to the front of the pan under the balancer. This makes changing the gasket difficult for them.
3. The pan contains the windage tray as part of the pan. Any S2 pre 2000 that has changed the oil pan gasket which is also the windage tray has sworn at the engineer that desiged the gasket for at least 15 minutes.
4. This pan appears shorter, I'll be measuring when I am home tonight. It tucks up behind the subframe better than the steel one. Any crank dropping, tire running over guy will tell you...tucked behind the frame is better.
5. The pan gasket is $14 for 2000+ vs $40 S2 pre 2000.
6. This oil filter adapter will not leak oil onto the subframe with each oil change.
7. This pan will torque better and more consistently on the gasket then the thinner steel pan.
8. And last... because I'm different!