http://www.starship-fantasy.com/ramps/Earthshaker-Ramp-Set

I ordered a set for WW and ES from Starship. I would say they're stronger than the originals really nice quality. Not sure on the decals I've seen them floating around.

I ordered WW ramps from Starship Fantasy a while back. While I haven't yet installed them, I can tell you for certain that the plastic they use is much thicker, thus stronger, than on the originals. I know the fit is the same, but I'm sure due to the thickness differences, you'll need some more persuasion to install the repros.

Also, I remember talking to someone working the booth at the York show one year and he said that they'll "never break" or something to that effect. Just for my own piece of mind, I'd still buy cliffy protectors for the areas that get banged up.

The ES ramps will need some dremel work at the plastic underneath the entrance flaps to fit right. (To be expected, given the extra thickness). FWIW The edges near the entrances WILL crack if the ball hits it enough (Metal is stronger than plastic), and Cliffy's protectors are always a good idea.

If your ES has the sinking building installed (either original or aftermarket) you will need to cut out a bit of the edge of the ramp to make the building still be able to rise/fall. (As called out in the sinking building instructions)