Pete etal,
I also did some checking-found 316 ss straps 1/4"x2"x36" at MSC supply for $91.19.Figure two chainplates per strap.Need to be cut ,drilled ,bent and polished.
cPanel® bolts and washers at McMaster Carr-www.mcmaster.com again need to be polished.More work =much less money
Chuck S/V NiftyNickers