1970 Duster AlterKtion, 4 Link, LS/T56/Turbo and Minitub

You are absolutely correct, 600 wheel is a handful on the street and it looks like you have the parts to get there. Make sure you have lots of fuel pump and injector (I always under calculate that for some reason) and you’ll get there. Don’t rely on the water/meth to “keep” the tune safe. Make the tune safe and use the water/meth as redundancy.