Verified answer

Emuparadise is a safe and reliable site for all types of roms. I get all my PS1 and N64 roms there. If you're looking for 2D console roms, check out www.coolrom.com

Do note, you may be asked to vote for them before downloading on emuparadise. The download sites can sometimes be suggestive, but your computer won't be infected by them.

Project 64 Download

CoolRoms is a good site. I got a few game I used to own for P64.