If anyone cares... I found my old time slips so I was able to look up the density altitude and compare it to my times.
My top 3 runs:
July 2006 - Stock heads, small cam, 100 shot - 12.32 ET 7412 DA
June 2010 - Fresh from the new head/cam swap, 3.73 gears - 12.56 ET 6746 DA
July 2010 - Added 4.10 gears - 12.28 ET 7227 DA
With just a little better DA I think I can be in the 11s here. I think I definitely can if I can get my traction issues figured out (I have an idea...

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