Not sure if the OP is serious about this build and 10 second goal but I can tell you it is possible for sure if you have the will and power (money too lol)... Probably an easy $15-$20k if you do most of the work yourself. Easily $10k into the motor build, a solid $5k into the 6L80 build, maybe $7k if you count a good Circle D converter and a second rebuild after you blow it from learning from your mistakes. The guys here are about right that you will need about 800-1,000hp at the crank to achieve your 10 second goal which is what I did as well.
Like the others have said, we need to know if you are doing the work yourself or paying a shop as that makes a big difference. If you can R & R a transmission and the engine, it would save you a ton of money that can be dumped into other things like fuel system and suspension. Lots of help around here if you know what questions to ask and answer some of the ones posted already.
Happy New Year everyone! I'm still around and will hopefully get some content up soon...