i bought a super cheap set on ebay as i said before. here it is...cheapest one i could find. its a SIDO system though.

http://cgi.ebay.com/ebaymotors/2004-...Q5fAccessories

only difference is when i bought mine i got 2 chrome tips. which have, like all chrome tips, began to get rust spots already from the salty roads. Im going to go ahead and replace those with stainless steel tips this summer. also, i would recommend going with a large diameter tip because in my opinion it has increased the sound depth quite a bit.