Anyone running Skunk2 cat-back exhaust for 88-91 Civic HB? Pipe size in mm?

I have emailed Skunk2, had other people email Skunk2 for me as well, obviously been to their site, & called different speed shops to find out if the pipe diameter for this application is 50mm or 60mm - does anyone run this set-up?

I am going to ask you for solid evidence when you post - I thank you in advance for you time.

 

there is no skunk2 exhaust yet for the EF they havent finished it yet ive been waiting for it for over a year

 

no wut i mean is skunk2 is a bunch of lazy asses who put dates out for things and dont come through....they told me id be out early summer here we r very late summer and it aint done screw them im about to do a oval es muffler or a trust catback