Made the plates that bolt up to the block today, had to make a few changes due to the block being a World products man o war with extra metal in a few places.
The sump doesn't fit either, hits on the Main cap at the back of the block.
You can just make out the misalignment of the bolt holes
I ended up changing the engine mount side plates to only drop the engine 1/2 inch instead of a full inch. The bush tubes were hitting.
Also modified the plates, if you follow the internet plans the side to side adjustment slot slopes up towards the engine quite a bit.
Expert opinion is what you probably want. I'd want at least 10mm, but I'm no expert and will also depend on the engine and gearbox mounts you're using which will determine how much it will move.
There's plenty of armchair experts here and like Hybrid, I think 10mm should be sufficient if you're using urethane mounts. One thing to consider though, is whether you can easily remove and replace the gearbox without scratching up the tunnel.
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