I try to run the 6.7 injectors on all of my builds these days 5.9 or 6.7l. I have not had a single one fail in about 2 years of service or rather 2 years of straight abuse. On the 04.5 and up guys I machine .040" off of the head to put the injector deeper in the bowl and they work fine with the piston design, hold downs and the electronics. All of the ones I have tried OHM out to the same resistance as 5.9 injectors even if the actuator is different the function is the same. They are without a doubt the cleanest performance injector I have seen. On the H2 vs. 181/210 comparison I used the 6.7l injectors on an '06 5.9l with an E.D. 66mm with an external gate. Fuel wise it had a smarty tnt-r, mp-8, and a bag of parts. It ended up making 760 I think after some tuning. And btw after the initial spoolup it was smoke free!