360 to 904 trans ( in a 318 car)

OEM 318 flexplate? View attachment 1715710275

I was concerned about lack of surface area as well as thickness (warping). IMO, not a good idea for many performance applications also. But if it worked.....my apologies for jumping to conclusions.
I'm aware what a OEM flexplate is.... lol... The weight welded in the arch would actually strengthen the stock flexplate I'd think. The guy I have balance them will build you a 1400 hp monster truck motor or a 95 hp smooth running 6 banger. The one I'm currently running has been behind 2 360's over the span of about 12 years. Maybe 15 yrs, I can't remember... LOL