B8 Audi A4 Avant Gets S4 Powertrain Swap for Max Performance - AudiWorld

This Audi A4 Avant S4 clone mimics something that wasn't sold in the U.S., and the results are quite impressive.

Find of the Day: Manual Swapped 2009 Audi A4 Avant - Audi Club North America

Audizine Forums

Audi A4 with a Supercharged S4 Powertrain – Engine Swap Depot

White Hot Heat: 2007 Audi A4 Avant S line Titanium Package Road Test - AudiWorld

Road Test: 2009 Audi A4 Avant - AudiWorld

Craziest Aero Ever!?! Here's Two Giant Wings with an Audi S4 Attached to Them - AudiWorld

IE Audi B9 S4, S5, SQ5 Stage 3 TTE710, TTE810, & Pure750 ECU Tune -Ava

B8 S4 Modified Wheels & Suspension Gallery Thread [Archive] - Page 2 - Audizine Forums

2009 Audi S4 First Drive: Pray for Rain - AudiWorld

The new Audi A4 - AudiWorld

Audi S4 - Wikipedia

Road Test: 2009 Audi A4 Avant - AudiWorld

Complete S4 Avant Swap Full Build In The States, 3.0T A4 Avant

Audi S4 - Wikipedia

Which used Audi models should I avoid while buying a used Audi? I want a B7 A4 Quattro Avant 3.0 TDI. Is that a reliable car? - Quora