Opinions on what to buy to lower ET...

Wow.

I'd say the car could definitely benefit from the Cal-tracs, and if ET is your benchmark for a decision, I'm pretty certain that your car would go quicker/faster by adding the Cal-trac vs. the carburetor. I would not be shocked to see your 60' improve by .4 - .5 after some tweaking - certainly you're making the power for it.

How much it will help with the twisting is hard to say. My car leaves with the drivers side very slightly higher than the passenger side. When I was only pulling the driver wheel about an inch or two the passenger side was barely on the ground still, but I'm not making close to the torque you are, and I only have subframes/no bar. Could I tune that out a little messing with the preload? Maybe?

I assume you've got a roll bar and subframes and all that?