Not a dead link. The whole site seems to be down today. I understand they've been hit by DoS attacks recently.
I used the Radioactive ROM (uses JIT to speed things up) for a while, and liked it, but then decided to try ARM11 (not compatible with JIT), so I reflashed. No ROM, just rooted, optimized ARM11, modified opengl drivers (strictly to get Angry Birds to run, otherwise not really needed), and of course deleted everything I didn't want.
I don't know how much screwing around with his phone your friend wants to do, but you might also want to try out the (un)official 2.2 that's now available at sdx. Many report that it feels quicker and smoother. I was thinking of trying it out next week.