[Walt Fricke]

With lead you have to be very careful about fastening. At a Club Race at Road America 10 or so years ago, after a nasty wreck the track crew found lead weights lying on the track. The bolt heads had simply pulled through the lead because it is so malleable. Of course, the engine ended up out on the track also. As I said, nasty. Luckily, none of that flying lead hit the driver.

Were I to use lead in bricks or pigs or whatnot, I'd want to lay a layer of 1/8" or so thick steel over the top, and have my fasteners go through that and the lead. That ought to deal with pull through. No doubt a suitably wide and stiff washer would do also, but why not overkill.

I also wonder how valuable it is for the likes of us to use lead? Because of its density, I suppose you can get the CG down a tiny fraction of an inch lower than using steel. But are any of us really at the NASCAR remove the gauges (thanks for that tid-bit) level? Lead is traditional, but is it that practical? If you are constantly adjusting the weight, a steel box with lead shot in it makes some sense. Add or remove a scoop and screw the cover back on?

Depleted uranium, anyone? You want heavy, that's heavy.