Not a mechanic here. I am having my 0-360 overhauled for my Mx-7. Mechanic is saying that the J6230-1 mounts that are supposed to be used on my Maule are discontinued. Maule is saying that we need J6230-5 mounts but they say there is a performance change. I don't know what is going on here can someone help?

The J6230-1 mounts are in stock at Air Power they have 113 of them.