where can i find a cvec pipe for an .18 with double tips

this is the one I just got last week. it only took about 3 days to get here too! and it works great. it make a bit of a difference perforamce wise and it sounds and looks good. it say.12-.15 but it works for an .18 as well since it is ment for small blocks.
http://www.cvecpowersystems.net/serv...-9/Z135/Detail

ok cool thanks