iono....anything that will fit. hopefully ported. I will either have to buy a prefabbed box or have someone here on the forums make one for me. im looking into either two 10" polk momo's, 2 10" l5 solo-barics, or 2 12" alpine type r's.
the polk momos wouldnt really be worth the buy...the L5s might be worth it, but i'd still got with tha Treo, i definatly wouldn't go type rs if i were you...but its your choice.