^ thanks Sam, il look into it as i know its not a DIY jobbie
Dyno figures from SR20forum say the SSAC 2.5" gives more power than the ASP.....although on a VE iirc. Should be interesting to see your dyno results.
I hated my SSAC header though. Quality was very poor compared to my HS gen5, i couldn`t even get the downpipe to seal at the header joint.