I've been running the Summit one for the last year, absolutely no problems. On any of these pumps, don't count on the O rings to seal, you're going to need some RTV!
I can make a pass in 100 degree heat, pull into the pits at 210 water temp and run the pump and radiator fan and in 10-15 minutes the water is at 140 degrees! https://www.summitracing.com/parts/sum-316005
