I have two installed. First one, I modified Warmoth’s Am Std route to allow the fit and motion. (Routed off rear edge or “lip” of top opening) Second one, I had Warmoth measure my bridge and route for it on a showcase body.
I highly recommend having them do it for the $45 u/c. The post location and route placement are NOT identical to the Am Std route and it places the whole bridge like 1 or 2 mm towards the treble edge of the neck.
That’s one bad*** vibrato bridge btw. Imparts a rich, sparkling tonal quality with slightly noticeable compression/energy loss as you play harder (the thing is so smooth and floaty fluttery, you can get it to warble a bit with percussive attack.). I use one with a roller nut and locking pegs and it is so buttery and slidey.
Better range and out-of-the-box tone then the Bladerunner, but it’s a different beast. (You can upgrade a bladerunner!) The Contour for me is similar to (though not as highly engineered as) the Wilkinson VS100, frankly the one and only thing that sets the Contour clearly ahead is the bearing design. It simply floats on those points like greased marbles.