3.8

I Recently (supposedly) got a stage 1(2000) contacted roush they told me there data didn’t go back that far to check it’s authenticity could anyone point me in the right direction of finding this out?thanks

I have a 1996 3.8L v6 and the only thing I've done in the engine bay is head gaskets, water pump, power steering, alternator. I have a built transmission and a transmission inner cooler. I also have a air intake from american muscle. When ever i start it cold or am driving not full throttle...