If you want Invidia, go for the V3, you can even fit the whole exhaust in your trunk, same with V4 but V3 is 70mm and loudest of all

 

http://www.hopupracing.com/inststhipeca4.html

 

N1 is what they call that good brand, ie, not the Q400, lol

 

im gettin it

 

I heard the Q400 had fitment issues.

 

I'm actually looking to find a used Spugen

 

i think a local got one...

 

the v1 and v2 invidias are the exact same as the spugen (of the time), except for the name plate and maybe the tips, from what i remember

 

Were all the Spugens made with the Magnaflow resonator? Seems like it may be even louder

 

What is the Q400?? I have an Invidia V4 or "Q300" and have had no fitment issues what-so-ever. In fact it fit better than the Greddy Ti-C I put on JSPD's car and better than the Spugen I took off of Clitsy's.

Zo- V4 is also 70mm like yours but as you said not near as loud. BTW, Zo's exhaust sounds absolutely amazing at the track!!!!!!