Inspired by another xb2 user on this thread I've modeled a weight for the rear end of the car that should fit under 5the gearbox. I had a friend print it up for me so I can see how it fits. According to the model properties if made of brass it should weigh approx 80 grams. I could make it in 3 pieces so you can add or remove weigh if desired. If it fits in may have some machined.
