[2] Initially, it was prepared as a four-cylinder engine for production in the Hackett, but the company folded before it was ready.

The Model F Pup was added to the range, fitted with a conventional 4-cylinder Gray-Bell engine, and priced at $1295.

The Combat line also included an attractive speedster in the Kissel Gold Bug pattern.

[2] Apex Corp. was sold to the American Motor Truck Company in Newark, Ohio, in 1922.

[6] There is no existing Ace automobile known,[7] however the Ypsilanti Automotive Heritage Museum offered a $5000 reward for evidence that directs to such a car.