I contacted Nameless Perforamnce and they said they would be interested in developing a set of mid/down pipes for the XF. They would need someone local willing to stop over there and let them develop a set. I asked them because they already sell downpipes for the XKR and XJR.

I asked about the 4.2L Supercharged because that is what I have. Obviously I'd prefer someone with the SC 4.2L to stop out but they'd probably do it for the other engines as well.

https://namelessperformance.com/products/jaguar

 

Good company. They have done fabricated mods and quick development on some other platforms (car companies). I have heard good things.

 

Thanks , they're one of our vendors as well
They have got a good reputation on their products