As posted it's your car... The prevailing opinion is these cars will live a long happy life and can be drag raced reguarly at 850rwhp(mid to high 9sec. car depending on race weight, DA), preferably on E85 for safety. Once you exceed this common threshoold the failure rate of parts seems to multiply in frequency many, many times over. If you want to run 1000rwhp and race a lot, you will need to start at the rear of the car modifying forward - rear end, axles & suspension, fuel system, transmission, engine... at this point does it make since to try and turn this platform into a 1000+rwhp that can handle track use. if you just want to go to cruise ins and put your dyno slip in the window then you will be fine 1000rwhp, but if you actually want to race the car it's going to take a lot of additional mods to make it reliable at 1000+.
My advice would be turn the power down a bit from where your at currently and go run mid 9 second passes all day every day - that's the sweet spot on the upper end of the platform's capability without spending a whole bunch of money.