Anyone install these on their Boss? If so, any issues with install or use afterwards?
I don't have a Boss but the installation on my 2014 Mustang GT was straightforward and easy. I did it with the front end on RaceRamps.
The jacking rails do not extend all the way to the rear wheel well specifically to accommodate the side exhaust for the Boss.
I love the rails and the ability to jack either a front corner or a whole side without using the hockey puck pinch rail adapters.
I'm not sure if they provide any additional benefit to handling but they certainly did not add any additional NVH.
I never tried putting in on 4 jackstands.How is it trying to get 4 wheels off the ground? Is there room for a jackstand on the rear end of the rails, they seem fairly short.
I use them on an 08 S197. As noted, they don't extend back terribly far. This makes them great for lifting the front up. But, to get the back wheel off the ground, you have to put the jack at the rear-most part of the rail and lift the entire side of the car pretty high. It would only work for all four wheels if you placed the rear jack stands under the axle once you used the jacking rail to get the car up; trying to use the rails only for all four jackstands would be bad.
Even on my two post lift, I can use the rails for the front arms only; for the back arms, I have to use the body mounting point for the lower control arms. If they made rails that extended from front wheel to back, it would be better, at least for us folks that don't have side exhaust.
That's a bummer. I wanted these jacking rails specifically so I could use a two post lift I have access to. So you're saying you can't get the rear arms of the lift on the back end of the jacking rails?
No, I can't. My two post lift is asymmetrical, so the rear arms are longer. There is no way to shorten them enough.
Even if your lift is symmetrical, you probably couldn't get the arms on the rail . . . and you wouldn't want to, IMO. The jacking rails stop just past halfway. Any attempt to lift the car up by the rails only is going to have your lift points very close together and likely without enough support at the rear.