lol turbos gona run ya quite a bit, biggest thing not to cheap out on parts on, make sure the intercooler is big enough haha, people usually go to small and run the engine to hot.
as for Kenny, theyre small, 3.0 litre, V6 (Z31) or twin (Z32) turbocharged engine. VG series engines. prolly not the best gas mileage considering the z31 is 150-160hp and the z32 is about 220hp. ANY CAR WILL LAST OVER 100K miles EASILY, if not you fucked up somewere. biggest thing is that people dont change all there fluids when theyre suppose to like oil and tranny fluid, making sure there is enough coolant in your radiator, i know this isnt fluids but making sure your air filter is clean. Dirty and old fluids is what fucks people over, and also dont put shit like "octane booster" or that shit in your car, if you want some stuff that makes a difference in your car is AMS OIL, my parents are actually dealers and shit but the oil AMS OIL makes i change once a year, the filter is guaranteed up to 15k miles and my oil is too. dont believe me look it up.
my car is at about 190k miles i believe right now and runs strong, ill check the exact amount when im not so lazy