I have a b20 vtec in a 97 civic with a Fabworx ac friendly ram horn manifold with a Garrett gt35r .82 AR with a 4 bolt rear housing and I'm wondering if it's possible or been done before, to make a down pipe to fit while retaining ac in the car. All replies and insights are greatly appreciated. Pics are definaty a plus. Thank you.

 

i think you answered your own question, if the mani is A/C friendly then you can use a regular A/C friendly downpipe.

 

I search alot and all I could find were 5 bolt down pipes. That's why I am asking if it is possible to do with the 4 bolt flange.

 

spoolin performance is your friend.