This is still on the front page? That's how you know MR is slow.
Last night I did the RAM swap and desoldered the components from a jumper pack in preparation for hardwiring them in.
For the RAM chips, I took one from an N64 and one from an expansion pack. When I was done I had a useless N64 and two of the smaller RAM chips, so I decided to try something. I soldered one to the N64 board and one to the expansion pack board, plugged it in, and viola! It worked. Taking the "expansion" pack out caused it to no longer work, of course, as it only had half the minimum RAM.
I tried putting my pseudo-expansion pack in a regular N64. All my non-expansion pack games worked fine. DK64 and Majora's Mask said there was no expansion pack, but Perfect Dark just wouldn't boot.
Just an interesting little tidbit of information for you all.