If you buy an 07 fixed grate the pump support insert end of it is exactly the same as what's on the ICS boats. So.......you can cut the rest of it off and you'll have the part you need. Or....you can modify the front of it so you can secure it too the original ICS mount. Sucks that this part is discontinued! Especially seeing they are prone to breaking off!
As stated above or have you local dealer do a dealer search for that part number. That will tell them every dealer that has it, then can then give you the phone number and you can call and order it from that dealer.