Hi Bill, yes, I have the red-top Optima and cannot say enough good things about it. Mostly, that I no longer have to use a battery tray and don't worry about acid eating my sheet metal anymore. (even had a brand-new battery tray crack and leaked acid onto my battery platform - ate a hole in it)
I fabricated the bracket shown below out of stock steel strap and angle iron and welded them together to grip the battery. Trust me, it ain't going nowhere! I trimmed a bit of the back of the battery housing (a little lip they had on it) and glued sheet rubber to the back and layered two sheets of rubber on the sheet metal below the battery (battery shelf) that is removable to cushion against abrasion.
Lot's of amps, clean and neat. Moss makes a fake-Lucas battery cover for those that want OE look. That doesn't bother me.