I'm restoring an Allard with a 292 y-block. I got new motor mounts, but they do not fit.This shows the problem:

The original mounts are lower and the holes are displaced compared to the new ones (Westar 2110 - Thunderbird 1955) The chassis of the Allard was modified in 1955, to "upgrade" from a 1950 flathead engine.I've browsed motor mounts for a lot of car models without luck. Any help identifying these mounts would be appreciated.
This post,  "55 Ford fairlane engine mount", seems to address the same topic, but without conclution.
Here is a picture of the project with the original mount