Assuming consistent fittings on the ends of each, is it appropriate to make those sorts of connections "in line" with just retaining clips holding to the frame rails on both sides? Or do I need to do it like the MG had it where it goes through a hole in a tab that's welded to the cross member? Asking because the FastCars IFS doesn't have that tab so trying to decide if i need to put one on the body to serve that purpose.
Rob, With constant steering and suspension input to the drop hose, I think it good practice to provide a rigid joint connection between the hard line and the hose to the caliper (like the original MG connection tab). Have a look at any vehicle, and you'll find that a factory designed brake line clipping/retention system is never compromised.
If you decide to add a tab to the body,check drop hose articulation for full wheel lock and full suspension travel before you give it that final weld.
Absolutely, mount the line in a tab welded or bolted to the chassis. If you don't the vibration from the flexing will eventually work harden the hard line and cause it to break.