Part# #77025-3 is a GenVII buick V6 3 bar with a stand alone harness. Price on that is $1766.77 Wide option # 77063 is $970.36. The ECU I have is version 3.2 about a year old. All the ECUs are the same, the part #s are to fit different options & applications. As for my support on any managment systems we sell & fuel injection systems in general you will find we have one of the best reputations out there. We are also a INNOVATE dealer and that unit is $349.00. I have used this with the holley system & it works great, I have not used it on the GenVII yet but i'm sure it will work.