Purely anecdotal (I could get a temp of the floor pan, but I am too lazy to dig thru my nitro r/c stuff to find the IR thermometer) I'd gues it was well over 200 degrees. Since, I have tweeked the heatshield brackets some to get the shield closer to the pipe and further from the floorpan/firewall. I also added a small section of thermotec adhesive backed radiant heat shield and put some on the exterior in the hottest felt area.
Today, driving around and checking periodically, the temp never got more than warm to the touch. I would be even better off pulling the whole exhaust and putting the thermotec stuff up the entire firewall directly behind the downpipe, but this will do just fine.
I did some minor tweeking of the fuel lines as well. Much more comfortable now.
