Has anyone drove a truck with the dropemember intstalled?

[abadsvt]

I was wondering if anyone has installed and then drove there truck with the dropmember installed. The reason i am asking is because i am making my own motor mounts for my new frame and was thinking about using a similiar style rubber insert that Nathan uses for his motor mounts. It is that little piece of hard rubber that isn't that thick. I would imagine that it would absorb some vibration but nothing like the stock rubber on the motor mounts I am going to be runing an LS1 with a little more agressive cam than stock so i will be getting a little more rumble and vibration and just want to double check first. So any comments on how they feel and if you noticed any extra vibration would be much appreciated. Thanks

Josh