Has anyone tried putting a japspeed manifold and a mugen twinloop backbox in the same setup on a 1.4? If so what did it sound like I can't find any vids on YouTube and also was their any noticeable difference compared to the stock exhaust?

I've found videos with mugen backboxes and Megan headers in the same setup which sounded pretty sweet (which is my second choice) also found vids of spoon n1 being fitted to ej9's which was also music :P but kind of a mugen nut.

Any suggestions on headers welcome would be doing me a favour cheers

 

Oh almost forgot, if your wondering why I'm so intrested on what manifold to put with the mugen backbox is 1 obviously a slight power gain and 2 some headers sound ****e with the backbox a kind of bogging out at low RPM sound