N64 Imported Games

[GatoSamurai]

Hi, i have a N64 PAL with some games, but because the RGB Mod cant be done in a N64 PAL, i have been thinking of buying a USA one, but i want to know if i could play all my PAL games on the USA console. I think that with a Passport or similar they should work, but im not sure, and also i dont know if they will run 50hz or 60hz.

Any ideas please ??