72 Dart Swinger, optional OEM Chassis Reincorcement (Frame Connectors)

Hi!

As some of you have already seen in my introduction thread, I'm living in Switzerland and I'm going to get an imported Car from the US legalized in Switzerland. Our regulations here are quite hard and to get a permission to ride everything on a classic car needs to be as original as possible...

my car had some chassis reinforcement tubes (frame connectors) between front chassis part and rear chassis part.

I only got the pics from the parts already removed

chassis reinforcement.jpg

so actually I got 2 opinions from two different mechanics. the one tells me that those reinforcement parts were, in the days the car got produced, an OEM Part and the other one tells me that there's no chance to proof that those connecting tubes are original MOPAR...

Anyone knows more about that? is it true that these parts were to buy as an extra option or not? Didn't find anything online until now...

Regards

Sascha