This is a Fluidyne radiator I bought from Shelby some six years ago for use in my High Tech. Sadly it did not fit causing me to have a Ron Davis piece custom made.
I've been moving this around my garage since then but now its moving time (out of state) so hopefully someone here can put it to better use than I have.
It has never seen fluid - it would not physically fit. Nice waste of a bunch of cash.