My concern would be the alignment of the thru hull holes for the bolts. If you do not mind filling then re-drilling I guess anything would work. If nothing else look at used fabed S/S or aluminum or even teak swim step. What is wrong with yours or did it not come with one?

I have one.........but you will have to buy the boat and trailer to get it. It's a 1989 357 SR1

I have one off a 272 sr1 87"wide, thanks.

Still looking if anyone has one or has any leads on one.