Thank you for your update. Wow, you have taken on a real task haven't you?
Firstly, welcome to the family, I hope we can guide you or advise you on what is going to be a tortuous path.
You say you have the engine, and some mountings, but you don't tell us the problem you are having.
We need to be able to visualise your situation, as if we were working at your side, so it's important that you describe in detail the problem. We have to see through your words...
I am not familiar with this particular engine swap. I'm pretty old school, as you will discover. But having just enquired with a company in the UK which specialises in engine swaps, how much it would cost to fit and 18T VW engine into my Skoda Fabia, seriously, I almost had a coronary.... Are you laid on the floor.....?
A mere £15000....yep three zeroes.
This is because it requires so much more than the engine. Apparently, to run faultlessly it requires the clocks, ecu, fuel pump, in fact all the associated electronics which are on the CanBus for that particular engine.... Then there are the hubs, brakes, driveshafts, intercooler etc, not to mention the exhaust system and gearbox hookup.
As I said, I'm not familiar with your model so I hope it will go well, but by all accounts modern engine swaps and intense.
Having got the warning ⚠ out of the way, if you can tell us exactly what the issue is with the engine mounts I or someone else will advise you.
I wish you well with this adventure. Kev.