I have gone 126 MPH on a DUTT neck stocker with alky on my TTA. I have a front mount on my GN that also runs 126 MPH. But the thing I like about the front mount is the engine compartment room it creates and it spools better since there is less restriction through it. My 6765 spools to 1lb of boost at 2400 RPM and my 6265 in my TTA with the DUTT neck spools 1lb of boost at 2600 RPM. Both cars have 0 pump vigilantes and the rest of the cars are basically the same. Same chip, same injectors, etc.