1 G in a truck? Good luck. My Z06 Vette does .99G (probably a tick over 1G with my new tires). In my wettest dream I cannot fathom the Tundra handling anywhere near that good
If you can get in the .8 or .9's, you're doing good!
Right now, your best option would be a 2WD RCSB, with the TRD lowering kit, and some low profile car tires. Might look goofy though with the thin tires... and your ride will be rough.
-Dave