I appreciate the input gents. I can try some different sizes, and measure the depth of the bolt hole on the new motor. Or, I could just rob the pieces off my old motor when I pull it, but I am trying to keep it as complete as possible in case I find a buyer for it. Not likely, but who knows.

I did ask FCP Euro and got a reply back that since I didn't have a Vin for the new motor, they couldn't really help. Seems odd. But regardless, I replied with the VIN off my 4.4 that the 4.6 is going into, since the motors (and piece in question) are common.

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Current
Original owner 2002 E53 X5 4.4i to 4.6i swap
1993 Mopar 318 Jeep Grand Cherokee - original owner
2015 V6 Jeep Grand Cherokee - the nice car for my wife
Former
1972 Audi Fox
1986 Saab 900S
1996 BMW Z3
1998 BMW E36 M3 Sedan
2004 BMW E46 M3
2006 Audi A3 Quatro