its the mk1 M2 i have, but its more than just the head, you need the right shaft in it too. the stick shafts are not much cope, we were'nt for me.AG are re-stocking the M2 are they worth giving a go?
i suppose the beauty of the interchangable shfts is you can get a few and see what works best. i had 10 diff to chose from i'd got from off here and ebay. my mate is a pro and i borrowed his GC2 and compared them all, best one was the Matrix white tie 5x3 i got off someone on here, head and shoulders better than the others for me. Unfort they don't make that shaft anymore, or at least not the same the company got bought and its a comp diff shaft now