You have a 98 7 series with a new 325HP engine and new 6sp tranny.
Who are you planning to drag race?
That engine and tranny is not cheap, you could've bought a new 7series, in diesel too.
Great video of the BMW 740d
Than again if you are the one doing the labor, that's half the cost there...

I am not sure about the LED lights on the camera, it'll starle the child.