Very interesting. I didn't know the mtech2 kit was available in 2001 already. You definitely have ASC. The DSC only came default late 2002. Even then, you would have an ASC button even with the DSC installed. Only way to know if you have DSC, is too look at how many brake lines you have around the brake booster. The DSC have a bunch extras and an extra module there.
The 6 speed and updated HVAC controls and some other updates came after the facelift, from production date 03/2003 onwards. I _think_ the switch from ASC to DSC also happened with this update.
And for the love of god, please keep this car on the road. As others have mentioned, a facelift, White, mtec2 330i manual is a beautiful and rare thing and this one seems to be worth saving from what I can see.
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