I took it for a long ride around lunchtime after hooking up the heating system.
The car hasn't been driven in winter except when I was testing my Tangerine Header HE kit years ago.
I was toasty warm without any booster fan, and even added a little fresh air to the mix as its above freezing out here today. I'll have to do that more often, as long as the roads are fairly dry - don't want to get any salt on the underbody.
The sound level is very comfortable, probably no louder than a stock muffler.
Its a little hard to tell because the carb inlet noise is the loudest sound and stock FI cars don't have that.
I sent Ed out with Heidi when I got back and they took some in-car video. That will go up on Youtube later.
My impression of the power is that it doesn't have as much midrange as with the 1 1/2" Tangerine Header I took off but it pulls strong right to 6000rpm. I didn't try to go any further as I don't know where the valves float. Its a stock cam with HD springs and about 9:1 compression.
I was cruising on the highway at 90mph for a few minutes and I think it wanted me to go faster

but holiday traffic was too heavy for me to do anything daring. Besides, I saw a few Staties along the way.