[5.0 Pony]

Yes, 75k+ would be alright. 5.0's are extremelly durable, and if taken care of are more than capable of being reliable over 100k. My car only has 71k on it also. But make sure you inspect a 100k plus car, if it looks like a rough 100k, i might steer away from it but that is just me. It all depends, the engine should be alright, its the other stuff i would worry about. Just look for one that has been well maintaned and you'll be fine.