not good guys.. my nos setup didn't work.. the guy who install them todl me that the noids where too small.. they filled up with the pressure from the tank, and that keep them from working.. he said I need to replace them by bigger selenoids.. I think he is full of S.. buy anyways, I got beat by a 1989 4wd silverado with a 377ci stroker AND a jeep 6 cyl with a 70hp shot of nos.. my truck keep detonating every freaking shift! :@ the stroker timeslip in the 1/8 of mile was 6.28 and mine 6.30 close race, my truck hit the rev limiter, BOOM, then kept going in the next gear.. jeep timeslip 6.76 and mine 6.90 :@@ once again BOOOOM in every shift.. What can cause that issue?? I got vids.. will upload them soon.