yes, our rail fits! so if you already have an FWD rail, you are fine. In addition I had some other rails made a long time ago, turned out the way we did the regulator mount, it interfered with the stock 2 piece upper, so we ended up putting them aside. I pulled one out of the box and it fits great, So I will put them On my site as a fuel rail for the lengel intake and put them on sale for $119 if anyone wants one! remember all out 2 piece rails will fit either the stock lengel intake, but the lengel rail will ONLY fit the lengel intake!