It was 100,000 ACTUAL miles, but they recently changed that and I thought it was 100,000 miles from any partners too, which includes AMEX rewards??? I would double check with the TWA Aviators desk before I did something like this. Also, it would take 200,000 AMEX points to get 100,000 TWA miles if the conversion rate is 2:1

I'm not a member of AMEX rewards so I don't know anything about that program.