long story short i had an rs4 engine and then some in an a6. Loved the car it was a rocket.. but i totaled the car last weekend and bought an s4 and want to swap. but i have one concern. i have apr downpipes on the engine from the a6... will they fit in the s4? id like to keep some of the exhaust at least to the x pipe. if anyone has done this before any help is much appriciated this will be the first time ive taken a 2.7 out.
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