I'm sure you already have the V2. The changes were implemented in 03.
I went and dug around in jumble of receipts and invoices I have collected through the years and found the Axiom invoices. I purchased the M80s on Sep7 2004 they are the "m80ti" x2 $522 a piece. WOW! nice price! I got excited thinking I was wrong about the version but as usual I was right!