Too cut or not to cut?

your springs are so long they have the rear shackle pushed all the way to the rear??????? WOW, fix that FIRST thing

If you are serious about hooking , re-read the above.
As many times as you need to until it sinks in.
Sway bar ?
Not my first choice for a drag car..........unless it is on the rear.
More tire isn't going to fix the basic problems you have now.
I'd strongly suggest tying the sub frames together too , but now we are into cutting territory.
If you don't have the correct motor , trans , rear ............. get to carving.
You aren't going to significantly impact the value as opposed to a numbers matching car.