Hello folks, i did do a search but couldnt find anything, i am looking at getting the cobra race Tube rear section (one without the back box) but i have 2 questions on this, first of all it is for my 02 WRX STI type uk
1. will this be legal with the standard system and that rear section
2. in the selections when chosing to purchase this it asks if i want a 2.5" bore or 3" bore, what is best and what one will fit to my standard mid section (or do both have same mounting flange?
click on link below and scroll down to SB17 Subaru Impreza Turbo WRX / STI (2001-2007) - Rear Section
link to exhaust http://www.cobrasport.com/exhaust/Subaru/Impreza+Turbo+WRX+%252F+STI+%282001-2007%29/31/0/0
any help would be great, thanks,
Ross