Horsepower capabilities of this Dana 60 sure-grip?

[69MOPE]

I do not want to run a spool, car will be pushing 1200HP, do you think this unit is capable?
http://www.summitracing.com/parts/d...HtIbUPxjxN4zru-qF3whWUqdvojHOLaSTiBoCey7w_wcB

 

[Supershafts]

I use the Eaton TT in a few perf apps

 

[2059]

I run Detroit TT in both my '64 hemi dodge manual transmission. Crank hp Dyno at just over 600hp/tq. And blown '08 challenger bhp 662/671tq. With no problems. Reading through the threads and from what I've been told you'll be pushing your luck with it at 800bhp and an auto trans. Especially if you hook. Just my $.02..