Ant,
When I built my LAE in '94 I planned on an FE engine (390) and was told by LAE that the stock mounts would work fine.
Later I found that my engine was about an inch higher than expected. When I talked to LAE about the differences we found that the engine mounts I used, from a '64 T-Bird, were shaped different than what he had in mind.
I never saw the mounth he talked about but he said they were sort of like a round rubber biscuit encased in a metal frame with the main hole in the center of the biscuit.
The mounts I had were formed in a "C" shape, The bottom horrizontal portion of the "C" had the bolt holes to mount to the frame, the top horizontal portion had the holes to mount to the block. The vertical portion was about 1-1/2" to 2" high. The whole thing was rubber coated.
I used the mounts I had and lowered the expansion tank that mounted to the block, removed the heater under the carb, replaced the
oil filler cap with a lower profile shinny one and used the shorter filter element in my cast oval air cleaner.
I did have one place on the under side of the hood where I saw some minor sigh of the air cleaner making contact. A little sand paper and buffing compound and that went away (I had a colored Gel-Coat finish). Love that "NO Paint Option".
The up side is that I had another inch or so of clearance before my
oil pan scraped on anything in the road.