It's the same pipe as used in the F10 so you may be able to use this link as reference:
http://f10.5post.com/forums/showthread.php?t=887817
Install for F10 is super easy, hopefully that translates to the E70. I actually couldn't find threads on the VRSF downpipe for the 3.5i. If you search you can find people discussing other brand downpipes though. At the price point I'd say they are definitely worth it. I had the F10 with JB4 and it was killer...my next step was the downpipe and I planned to go VRSF but ended up buying a different car.
EDIT: Make sure you try to buy through the forum for a member discount. VRSF posts in the classifieds all the time.
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2019 Ford Raptor SuperCrew
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