Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Plenty of guys running them here, I don't think I've seen somebody run them with a fabtech lift but you should be okay, just watch the ball joints on the upper control arms.
They told me the same thing they will not warranty your left if you stack little if you had any spacers struts that is not with the fab tech suspension they will void it.