What ET should my Duster be running?

Yeah, the rear end is really stiff and I need to get to the track and muck around with it more. It was spinning the boots. It was my fault as I was doing mega burnouts with the Drag Radials.

Yeah, I'll fix the timing issue first as well.
Ok, skip the mega burnouts with drag radials. The first time i ever made a pass in my 73, i drove AROUND the water box, no burn out, left off idle and just sort of "squeezed" the throttle, 60ft was 1.7ish and et was like 7:11 1/8th mile. Thats a 10' convertor and drag radials.