Short and sweet it is Supertrooper using molds made by CAP and a copy of a TE2 kneeplate. CAP molds are a copy of TE armor. Check out this thread.
http://forum.whitearmor.net/index.php?showtopic=7239
The Best ready to wear completed available is a TE2 done by TK-4510 here on the forum. Or you can get a TE2 or ATA or AP and possibly have it done by someone like MIke Tk-4510 etc....