I am a few days away from that but lsfarms gave me a set of injectors to try out. I am trying to find out if the sps66 is slower to spool at lower than my pdr HX40. I know its faster above 1400 rpm's but want to know if its the same or slower at lower rpm's. I went out and got a Hurst roll control for the truck now. I will be going over to lsfarms for an output shaft.