Thought I'd take a break from installing a new kitchen faucet to give you an advance peek at the Lift Master™. To obtain enough clearance to slide it underneath the car to the lift points I use ramps under the wheels. But then, I have to use ramps with the supposedly low-profile floor jack alone. The Lift Master™ worked perfectly in testing. The car was level side-to-side at maximum jack height. I didn't take a picture because it wasn't painted yet, but more photos to follow when I put the car on jack stands to drop the old engine (although it might be a while before I can get to it).
Lift Master™ dimensions: 5" width x 1" height x 36" length. Height added to floor jack: 3/16" (thickness of the steel channel) plus 1" (rubber pads).