4 Bolt / 2 Bolt Offset master cylinder adapter.

It is a Mopar Performance one. Part number P5249717. I bought it for my race car but did not use it. Figure someone else may need it.
I paid close to 150 for it with tax and shipping if my memory still works. I think it is a good deal at 100.00 shipped.
Summit and Mopar shows it as discontinued.