Those tank brackets are certainly different, they substantially reinforce the lower tank brackets that rarely crack or cause leaks. The ones that usually cause the problems are the forward brackets behind the seat bulkhead, the ones that are more difficult to see and get to. The chances of any tank bracket cracking is reduced by ensuring the retaining straps are tight but this again requires the seat bulkhead to be removed. There is an article about doing this tank crack preventative modification in the Morgan Three wheeler Club Bulletin magazine in may 2019, available online via.
https://www.mtwc.co.uk/news-post/. Nice looking modification IMHO but I doubt it will prevent much tank cracking
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