How to make this?

[tysonbully2k12]

Been after this for a while now and it seems when I have no money they pop up for sale. Does anyone have a rough idea on how to make one or has one they can sell to me at the end of the month.

Thanks guys

i made mine by,
cut the left vent out
get a piece of pipe that fits over boost gauge,
line it up where you want it,
fill with fiberglass, and a thin layer of filler and smooth
paint and lacquer.