grounding distribution blocks

I'm wiring up a ton of accessories in a public-service type install. (strobes, led's, siren, radios, etc...) I've got aftermarket fuse panels that will power everything just fine. The problem is trying to ground everything. It's not an audio type install where you just need to ground a couple of heavy gauge wires with a distribution block. I'll need to ground maybe a dozen or so smaller gauge wires with little ring terminals on the ends. Is there any type of distribution block or barrier strip I can use that has at least 10 or 12 inputs and have a good size (at least 4 ga) grounding cable attachment point? A place to buy online would be best. Thanks

i know what you need. you need a bus bar, that will work the best for what you are doing. here's a link cuz i'm a nice guy: http://www.bertholdelectric.com/gusBerthold/groundBus_coGroundBar.asp  good luck man!