early A body engine swap

I received the Anchor 2710 mounts, and the positive news is that they still do have the locking tabs also embedded in the rubber. Looks like the advertisement pictures are not correct.
"Bad" news is that they are both thick and sturdy. I really afraid there is zero change for me to use these with the current headers. I need to order the 2265 mounts as back up before trying anything with these.
anchor_2710.jpg