Since Ramesses II and Megachips are quite difficult to get nowadays, I am thinking of building one myself. When looking at this https://github.com/LIV2/A500-2Meg-Chip-ram/tree/PLCC the "weird" part is the PLCC plug, which is made by stacking a few pcbs and mounting pins one by one, which looks painstakingly annoying. Is there any reason not to use something like the part linked below?
Elettronica - Adattatori - Attivi-Accessori-Zoccoli per c.i. - Adattatore PLCC 84 pin 531-84-7,2