Normally we do NOT install tungsten weights as we do not know what the final outcome of a car is going to be. Since we can not know how much paint stickers, whatever you are going to put on there, there is no way to gauge how much tungsten to place.
Secondly, because tungsten is so dense and hard, you can not drill it to reduce weight. Most of our car bodies are already have great amounts of wood weight removed. If we are overweight after you paint, then there is no real way to “remove” weight to get race compliant.
Thirdly, we do not know what type of track or build you are building to properly balance the car for your specific track. So many different tracks.
Lead cars will 99% of the time will have weight installed, with the exception of the 5 and 7 slot wedges as those were our first “cross over” weight designs that could use both tungsten and lead. For those we provide 3 lead “bricks” for you to install.
Majority of our car designs were done with lead as the weight. And that lead must be poured into holes that we drill. Trying to fill the holes with fishing weights is not going to work. You need the entire holes filled with molten lead to get it to be race ready.