This pack has now been made available through the YouTube channel from Seban (not mine) either from discord or speedrun.
New here so not able to post links. Title of the video is:
Syphon Filter: Dark Mirror - FPS Mode
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi