Offer for a housing

Hello! So I decided to put my XION 15 in a bandpass housing, which is then to be built in such a way that the opening of the housing through the first aid box plays in my 124er Limo into the interior, because behind the back seat the tank is sitting and the only opening this is from the first aid box. Question is now, who does this or would someone from the forum here, of course against appropriate remuneration, prepare the suitable To build housing for my car or for the sub? Would I be very pleased