what ram for 2009 mac pro flashed from 4,1 to 5,1

For the 2009 Mac Pro 4,1 Apple recommends 4 (Quad-Core) or 8 (8-Core) - 240-pin PC3-8500 (1066MHz) DDR3 ECC SDRAM.

This is the RAM currently running my 2009 Mac Pro that was flashed from 4,1 to 5,1.

It's my understanding that if I install a pair of chips for a 2010 Mac Pro 5,1 in the las two empty slots, (the 5,1 runs on - 240-pin PC3-10600E (1333 MHz) DDR3 ECC SDRAM (memory speed for certain configurations is 1066 MHz) and use of 1333 chips would only run at 1066.

Can anyone recommend a 2x 8GB (total 16 GB) set of chips?

Would these work?

https://www.amazon.com/Timetec-PC3-10600-Unbuffered-Notebook-Computer/dp/B014E29G0E/ref=sr_1_16?dib=eyJ2IjoiMSJ9.XwWxx_EIezccZ6dZ0K7ExOWM3SC-bKT_grV_iGLqFUtbA53Qt5Yw4QcN8R653EInIDBp46kn8ehqheEefnf4UADFavP76Wmr3Cai4qnsE1HhZyWJJt2gB2L-YqBPl9qb9xkFztPUTXfVtPRm39r2XYwp2YkbO37x3UPdZp6FQce8ZWlTZcxFTlmmBTr56Vu789KwYqMmXmzL3YEG_KTPxRVe-IifCRYYnrKVbY8dhy0.h-sv7j8giEZHOBdkUSiWBNEQ09-rbscWS7YKjug50dM&dib_tag=se&m=A23AD5LOJUVSEP&marketplaceID=ATVPDKIKX0DER&qid=1740726261&s=merchant-items&sr=1-16&th=1

Thanks-mog