what i will say is 205 rallyes, 106 rallyes were both ghey standard cos you could strip out a gti and be the faster/cheaper for it.
Now it's interesting you should mention that, because the
original 205 Rallye was a very different beast to the stock 205s, as it was built for rally homologation purposes, so had a screaming 1.4 carb motor and all sorts of trickness in the shell.
Unfortunately my brain lost interest in retaining information about the 106 Rallye, which suggests it was just a basic 106 with some stickers 'n' stuff. I suspect the OP will be along shortly to correct me.