I dont think swapping a vert subframe is a good idea for coupe guys though. After more research its not a direct bolt up due to the exhaust has to be routed a little different as well...
I would say though, the MS bar is stiffer than the vert subframe. Its not stamped steel for one and is a straight shot instead of the angled approach the vert frame uses...
Also, the MS bar weighs less, which is very important for me
just my two cents though...