IMDB is a good source, but not really for aspect ratios, which are as often wrong as correct.
The 1.33 side of the dvd is unmatted, but it does also lose some information on the sides. It's probably more open-matte than it is p&s, but it's still MAR
The 1.66 is not anamorphic as far as I can tell, but at least it's OAR.
Buy the MAR if you wish, but if you check this site's mission statement, we are pro-OAR, so don't be upset if you get flak for doing so.