I am. Its on my drag only car. 440 with 727. Trans brake. Only thing i can say bad is it does not like the two step lately so I just slam it on the converter. I have a work around but havent tried it yet
Im using the external fuel pump with the corvette filter near the tank. This way you only need a short piece of bypass hose back to the fuel cell.
The FiTechs seem complicated at first but once you understand them they are quite easy to work with
If you buy one get it through
Www.paceperformance.com you get their support along with FiTech support which is very good