slant6 to 360 mounts for a 65 dart

Not sure if it’s what your looking for, these were off my 360 in my 65 valiant. They are original 273 brackets and newer mounts. I had the conversion mounts before but with a little bit of power, a 4 speed and slicks they bent and the engine/trans was pushed back about a half inch due to them not having any support from front to back.

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Please educate me , I have a 66 slant and going to install V8 with solid motor mounts for drag car can the adapters support some serious HP or is V8 cross member & mounts the better choice I want to do this once thanks Chris