The Ripmax gear fit into the mounts with just a little modification to the ribs holding the mounts and to those where the gear leg and wheel are stowed.
One issue that arose though was that the wheels and struts on the Ripmax gear are beefier (a good thing!) and thus deeper than the originals in the kit. As a result, the wheel needed to stow right up against the upper skin in order to lie completely within the wing. In the stock kit, there is a balsa "doubler" under the upper skin between ribs 1 and 2 to carry the structure from the front to the back of the wing and stiffen the wing skin above the wheel.
In order for the wheel to go up close enough to the upper wing skin, this doubler and the sections of ribs 1 and 2 had to be removed. To stiffen the skin and return some structural stiffness to this area, I glassed the inside of the Proskin with carbon cloth here as well. The result is that the wheel can go all the way into the wing as required to be flush with the lower wing skin, and that area of the wing is still sufficiently stiff to maintain the structure.
Bob