yes the coustomer service is great, the idle power is nuts on the 275 amp alt it has the biggest idle power and there way underratted i would doubt it does 200+ at idle and 300+ at 2k rpm, im acatally getting a second one with a bracket just got them powdercoated limegreen they look really mean, I also had really good luck with excess amperage and ohio genators but I do like the nation the best and dc the guy is a total *** and my orignal alt from them took 3 months i cancelled order and moved on