Installing headers

[ALLTHECAMS]

I'm installing OBX headers on my 1991 Z and it has Borla Challenge exhaust on it already. Do I need to remove it for the install? I'd rather​ not if I don't have to.
Matt

Sent from my XT1710-02 using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

[Ccmano]

Yup, exhaust has to come out.
H
:cheers: