Anyone know what size is the Stock RalliArt exhaust, I haven't had time to get it in the air and take any measurements. Looking to just build a quick Muffler delete and want to know what flang size I need to bolt to the MidPipe.(between Axle and CAT).

Any Help would be great.

 

based on measuring the flange of the "exit" side of the cat.

....i would say 2 1/2" .

the center-to-center spacing for the bolt holes on the flange is 4".

 

Thanks, that helps a lot, we'll see where this Goes from here.

 

So it's been a while and I forgot to update the thread. Also, a 3" flange will bolt directly to the Cat with very little modification needed. just have to round out the Bolt holes on the 3" flange a little bit, use stock bolts to bolt it to the Cat.

Here is what I started with:

Stock Cat:


And the Progression from there...... 3" SS Cat Back
















And a Short Video:

http://mkii-supra.com/images/video/GEDC0755.MOV