hi anyone from Sacramento California know where i can take my 1975 datsun 280z with rb25det swap to diagnose. i want to get a list of shop, so i can take my car in and see if they can find the problem im having with the z. the car starts and everything, but it seem like theirs a mixture of electric problem. for some reason, my volts gauge will jump if my autometer tach work, but for a good 3-5 sec, then tach will drop back down. it will repeat itself constantly over and over. i took the car out for a spin, and it shutter if i get it a full throttle. anyone, had this kind of problem before, that can maybe help me before i take my ride in for a diagnose??