yeah david that is what i thought but if you look at this link they just call it a downpipe (this is half the reasion i was asking the question) so again if i am misunderstanding this let me know.

link

http://www.racingbeat.com/FRmazda2.htm

read they refer to the cat replacment pipe as the downpipe

also this link off same page says it is for 1989-91 RX-7 Coupe Non-Turbo (equipped with Manual Transmission)

http://www.racingbeat.com/FRmazda2.htm