Gregg, I used Kyosho Zeal vibration absorbing servo tape on the ESC:
http://www.amainhobbies.com/product_...ng-Gel-1-Sheet
That stuff is awesome. Super thick and very gel-like. The only bad thing is that it's thick, so it raises the ESC up quite a bit. I used it on the receiver too, but I'll put the receiver on its side tonight and see how that works out.
As for the radio, my kiddo got the 3PM-X when he took my Revo, so naturally I had to get another radio.

$489 at Tower minus $60, plus EasyPay. Winner, winner, chicken dinner!

Yeah, I probably shouldn't have bought a radio that expensive, but it is a very nice radio. The receiver is pretty darn small too. The antenna is probably 8" or so? I didn't take a close look, but it goes from the receiver into the tube, and the end of the antenna is less than an inch from the end of the antenna tube in the pictures.
Lucky guy, I wish I was off today. I'm itching to go for a real test drive!

Now that I have the kit mostly finished (need to tweak the alignment, balance tires, etc), I need to get going on my full scale car. First race back after two years off is in March...