Johnie..I'm late to the party, but I bought from the seller you listed for my 550. Very close match, but mine didn't include the chrome
trim. I had to cut off the old chrome strip from the original cover, reinstall it back on the sharp edge of the seat pan, and then wrap and fasten the new cover. It looks very nice and the quality is pretty decent, but I don't have the chrome trim. Somebody here,
I think it was "oldhat"found a supplier for seat trim that was nearly identical to the original. You might P.M. him. If I had to do it
over, and I might, I'd use something different on the pan edge, use wilbur's method of cover retension, the spike strips, and find
the authentic trim. In my mind, that would be as close to original as you could get. Those covers, for the price are a good deal IMO.