i bought something similar to NEO-6M GPS Module, i think it is, but havent use it in any of my project, i thought to put it in an rc airplane it will take sometime before i get back to the project. i havent bought anything else so i dont have any other suggestion. about your SIM-GPS module, i think there should be UART interface (as in the advert), maybe through the many pins header there but not sure never have those nor use that mode so you may investigate yourself.