69 Valiant dyno numbers, and video

I wish I could watch videos on teh work PC...lol.
The chassis dyno can be a fun tool. But it's still not the real deal. So while you can find power there, a track session is still the best way to get tuning and log book data.
What does the car have for trans and rear and what figure are you using for a driveline loss there? I come out around 520hp at the flywheel but I know a lot of people use different percentages.