For sale is a custom 3" Y pipe made to fit any lsX with stock manifolds and a 4l60E. Fully stainless and tig welded with V-bands, was professionally made by a forum sponsor. The middle pancaked for clearance so it will be a universal fit on your setup. O2's are NOT included! This is a $750.00 piece! I have no use for this thing due to the new setup : ) 
PM me with questions and don't shit up my thread! 
$350.00 Firm 
http://img.photobucket.com/albums/v704/hiitsmejimmy/RX7ThrottleBody004.jpg 
http://img.photobucket.com/albums/v704/hiitsmejimmy/RX7ThrottleBody005.jpg 
http://img.photobucket.com/albums/v704/hiitsmejimmy/RX7ThrottleBody009.jpg