Mr. Gasket #4455 terminal block kit

I looked at Littelfuse/Cole Hersee, Cooper-Bussmann, Buyer's, Standard Motor Products and Blue Sea Systems and none offer that kind of arrangement. 'Twas a bit of a unicorn. A call to our performance warehouse confirmed that no, they don't have any left and yes, it's discontinued for good.

Short of digging deep on sites like Digi-Key and Mouser for individual components, I can't really think of where else to look.