I have seen this pic before on the internet, it is said this B30 is build into a 122, but if you look you see not just the heater was placed inside but the whole firewall is from a 164, and also the mountings for the 'front wings' (or whatever they're called in english, excuse) are different. I also see that the whole chassis on both sides of the engine are just like in a 164.

So two possible options arise:
-its just a 164 with some funny carbs,
-its a 122 with a whole 'front section'/engine bay from a 164, so including front suspension etc. What do you think?

I'm thinking of putting an B30 in a 122 just by letting the engine stick forward a bit further, which would mean going straight through the radiator...
so i would have to relocate that. I also gues I would have to use stronger suspension springs swaybar etc because of the increase in weight. Things like that can all be solved but I'm not sure if the car would still react/handle ok when going round the corner a bit fast...