Zumindest beim 2007er Modell klingt die Beschreibung ziemlich identisch. Nachzulesen bei
http://www.specialized.com
P2:
A1 Premium Aluminum, double butted ORE DT and TT, forged/releived HT and ISCG BB, 6mm offset rear triangle and forged horizontal drop-outs w/ integrated chain tensioners, replaceable hanger
P3:
A1 Premium Aluminum, double butted ORE DT and TT, forged/releived HT and ISCG BB, 6mm offset rear triangle and forged horizontal drop-outs w/ integrated chain tensioners, replaceable hanger