You got a lot to do to get to 500 hp for starters.
Tips, get an e locker or spool for the front end. Of course a limited slip at least for the rear. Traction bars and hang all the weight you can if allowed.
Some pulling bodies require the following; upward exhaust, drive shaft loops, kill switches. 500 HP will be in more than the stock class for sure as you won't be able to get it without a larger turbo/injectors. Some have turbo inducer classes such as 2.5, 2.8, 3.0 To compete in these 2.5 450-550 2.8 550-750 3.0 750+.
I am not trying to discourage you at all, pulling is very exciting and addicting though so be ready to go broke!