The main problem you will find is trying to track down a tuner. Some are reluctant as they have to spend time getting to know the user interface. There are Wolf premium dealers around so either try to track one of them down, or speak to your preferred tuner and ask them if they are willing to take the time to get to know the Wolf. I dare say that they will be pleasantly suprised at what Wolf can offer them. Your totally right about the price being about the same with people getting a Z32 as well. Removing the AFM altogether is a better option IMO too, it unclutters the engine bay that little more and a MAP sensor gives a true indicator as to the amount of air being fed into the engine. As the air that passes through the AFM still has to hit the compresser blades, travel through the intercooler, some more piping, and then into the plenum, with possible leaks and pressure drops along the way. There are different trains of thought however.
As for cars that are currently using Wolf, see issue 77 of HPI, the GHOSTT car is running V4, soon to be upgraded to V500, and puts out 487RWKW. And just remember, just because people aren't doing it, doesn't make it wrong.