I went 127 mph with a 95% dc. Changed a bunch of stuff including injectors to 160's. I noticed I had a weak pump. Probably could have gone further with the 95's. The 71 will definitely max those out fast.
The hpq is the smaller version of the hps. The only ones that run that are guys running a 3 bolt ex housing. The hps won't fit in those. It depends on your hp goal anyway. The backpressure will limit the compressor from making as much power as it can if you fun it hard