Does anyone know what type of towbar I should have fitted to my 2012 Focus Titanium? Its for towing a folding camper and I have parking sensors. I've been getting conflicting advice. One the one hand I have towsure and towbar express who simply say "detachable" and thats it. no mention of things another guy who says that fixed would actually be okay. But that I should also get something that alters the stability? programming? And something about getting the card coded after its been fitted? Any help would be gratefully appreciated!