For those who insist on using an adapter with RAM onboard: try this one. It can be bought preassembled from Sordan in Ireland.
I am yet to find any reports of someone who successfully omitted the Rejuvenator's onboard RAM, so your mileage may vary. I personally wouldn't take any risks and go for 4x 514400 on SOJ-to-DIP adapters, e.g. the ones at Sordan's.